Welcome to the Q&A Forum

Sidewide Footer Links (ideal with Keywordrich Anchor) are awful. Nofollow Links shouldn't be a Problem, so you can ad that in your themes. You could kill them by yourselfe or change the default value for linking to theme author.

There couldn't be any good thing on such a link, so nofollow I think its ok, no link is better
Thats 2010-SEO and burried long time ago.

For the Links you allready have: You know your Linking-phrase, so:

search the web for that phrase,
sort them by domain,
make a disavow-file with these,
Submit them (thats what I would do)

By the way: Some Theme-Users are not to clever in SEO/Webdesign/Programming - they may simply change your link-class to "display:none" or change the link-color to background color. (I have seen a lot crazy things, including Theme by: zensored cheapest flights

Make BlogPosts just to be able to link to other own-Domains is wasting time and money.
Make Blog Post for Users wich helps answering questions (wich may earn links) is a better idea for a blog.

The "brilliant Idea" starts wrong, I usually dont think "what can I do for search engines" (Admit - years ago I did, I was young and needed the money :D)

I think you ment changes. And I am not the guy who likes to wait for the best ...
I allways take the "fetch-as-google-option". Best way to see results...

Could not imagine why that should be bad.

Each Product Feature is good to be explained (for the user at least). Linking between different sub-directories in general is not a problem. The only thing what could make a "Problem" is, that your guides are linked a lot better than the rest. I usually ask myselfe: Is that link useful for the user? And if the answer is yes, I care less about possible Problems. I just think twice when it is an external Link.

Additional, for internal Linking - https://moz.com/blog/should-seos-care-about-internal-links-whiteboard-friday

I think it is not necessary to redirect the duplicate domain, just a faster way 2 show that the content is on the original only.

Depending on the topic and competitors, changing the title can make a huge difference and that pretty quickly...

Ive never has that problem (or a client) so i cant say you are punished. I thought google wouldn't punish the original, just the copy - but if they link to each other it may (should) happen.

So - take the replic-domain - redirect everything 301 to the orignial - ask google for indexing the duplicate Pages (complete domain) with Google Search Console. That should work faster than just wait.

If nothing happen, it was something different

i would like to say - so much content you need to describe your category or products to the user.

But it is still working to write a lot of content arround the topic and ask so much questions and fill it up with keywordrich testimonials. That done in the left sidebar makes the content look thin and the products are on top.

Also you can write a lot content above the products - not to much - and just after the products. A lot shops are still working that way.

just to explain what i mean - the #1 result for your topic in germany: zalando(dot)de/yogahose/  - they do it for each category and rank perfectly. Not just because the content, but it may be one reason. They ussually use 300+ Words, mostly 300 and other relevant categries are linked in these 300 words.

Be sure you don't have duplicate content and right canonicals. Take care about your filter and pagination

Redirect 301 and for all pages? So, do you redirected demo.website.com to website.com/demo or everything like demo.website.com/article/post123.html to website.com/demo/article/post123.html

And the question is, maybe both is indexed. google something with inurl:seomoz.org - you would be suprised

Its "just" a Launch with a combined Relaunch

You could use both checklist like https://moz.com/blog/10-things-relaunch-your-website for the relaunch part. Here you could find Redirects and so on.

Additional you could use https://moz.com/blog/starting-over-part-1-a-prelaunch-checklist for the Launch Part (Domain, Server, CMS, ...).

Dont forget part 2 and 3 https://moz.com/blog/starting-over-part-2-launch, https://moz.com/blog/starting-over-part-3-optimize.

Depands on the website, but normally it's not a one man job - a team with a lot of knowledge (ideal in relaunch) should support that job.

It is part of the free version as i mentioned above.

The interface is changing a lot, you can find it right after pages / posts. Where you can change Meta Description and Title. At the Moment (newest YOAST Version) there is on the left side a light-gray "Share-Icon" if you click there, you can edit the social tags.

iframes are not seo "unfriendly" - otherwise Google Maps Embeds or youtube embeds would hurt your websites SEO, thats not the truth. Without example I cant say something about your page, but it is "simple" to make sites with iframes visible.

Create enaugh visible stuff wich is unique an has a lot value arround your iframe. Do your "normal" SEO Stuff and done... Avoid sites with iframes only Thats not so much content.

Maybe you know that all - but someone may not and find that here googling for iframes and SEO. A lot of tools are saying: Your website has a problem, u are using iframes... and less people think about why - they just think: Ok, cut it out.

Yoast SEO Plugin is doing that since years.
You are able to chose a Twitter/OG-image, a separate title and description - for both twitter and OG.

All you need...
For the homepage, pages and posts - for everything. Working in free version...

Poah, images and text in iframes? Thats an SEO-issue right now - and one of the first to fix.
It wouldn't hurt you.

Everything what is providing useful infos for your customer to explain your products and helps him to decide to buy (or not) is great.

• images
• videos
• text
• reviews - ratings
• q&A

You can also ad something like related Products or people also bought (smatphone+smartphone-cover maybe)

I think that could help: https://moz.com/blog/perfecting-onpage-optimization-for-ecommerce-websites

a bit more technically: https://www.stonetemple.com/do-e-commerce-sites-completely-mess-up-their-seo/

You may redirect them 301 to the page wich is now the best answer for the search query. That fixes the problem for the user immediatly.
You can than go to search console and let the bot crawl the url again (fetch as google) - he will see the redirect, you can send it to google.
Make sure your redirection is the best answer.

It's easy to say, if you are the best result for mobiles you will be shown. But thats not the question. The Problem is, if the content is important for desktop-searchers it will be important for mobile-searches to. It could effect a less mobile ranking (when I am right) - if the content is not important, why it exists?

It is not a problem to hide some content or don't show all the content you show on desktop page. How it is in your special case? Watch the mobile and Desktop Rankings. If the missing content is important for ranking, you should see that.

Every Subdomain is a domain with own Domain Autority. In general I would not use sub-domains - in a few special cases it is a good decision, but normally a sub-domain is a new domain starting at zero. I like Landing Pages and Blogs in subfolders wich helps a lot for the existing domains autority.
By the way, links from subdomains du other subdomain (www, etc) are treaded like internal links.

Q:whether having subdomain like this would affect the traffic metric and ineffect affect the SEO and Rankings of our site
A: It would be better if it's a subfolder, but yes it will affect in traffic and that allways could lead you to better rankings

Q: does not affect the increase in domain authority
A: correct

Q:considered as seperate websites
A: yep!

Q: wanted to make sure that it does help in the overall domain
A: Like I said in A one it would be better with a subfolder (special the blog) but it wont hurt you

I know  
I just took your language topic to say it rankbrain iproves understanding. Don't thought you excluded other languages rly. Special with such a typical german lastname

When Rankbrain is a factor for rankings in up to 15% of all search querries than it is like a "factor". If Panda is throwing you out of a ranking than it could be a factor and we call it "filter" because he filters you out. Both seems to be an algorithm written some smart people. I think it is not so important to have a name for it - Rankbrain is enaugh. (just thought)
It think we call it factor, because Rankbrain doesn't change a rankingalgorithm, but it may affect how the algo is ranking for your querry. So Rankbrain isn't telling google how it thinks about links or athor factors, thatswhy we don't call it algorithm I guess.

What is an unusual longtail querry? When it starts to be unusual? Whe start to talk to google, we ask questions. Never heard anybody saying: "OK Google! Best Coffee Berlin". Rankbrain is learning and trying to give you the perfect answer. To do it Rankbrain trys to figure out what you really want. When you say "best Coffee Berlin" - what could rankbrain interpret or understand better than good old hummingbird alone would do?

I read that google now can answer negative questions. So if you ask "how can I do ABC without XYZ" and you get the correct answer. before you always got a "how to abc with xyz"-answer.

@rebecca Google is also speaking a solid german - so much better than bing does. An I think there are some more languages - mandarin maybe. But I bet Rankbrain improves the understanding of languages.

Just what I think - believe or read...

agreed -> that could be a way to check.
BTW: I think it is also a question for "brand searches" not only brand mentions. I mean, when people search the brand + Keyword its also needed that google knows the brand

1st - if you don't know - you've got a meta-robots noindex-tag, so the site couldn't be indexed.
2nd- The page with the content you try to add the the hreflang-tag is a frameset.
There is no text, not a single word, just two iframes.

For Google, the frameset is not the page wich it would show in search results, it takes the frame: memoq/current/help-de/memoq_help_title_page.html

(maybe you could ad the right hreflang-tags here to - google has indexed it)

https://www.google.de/search?q=%22Welcome+to+the+memoQ+Help,+your+complete+resource+of+information+needed+to+efficiently+and+reliably%22&ie=utf-8&oe=utf-8&gws_rd=cr&ei=jfTeVozHIMGmsAG-77DQDg

I have never used Framesets, and really never in more than one language. 
Maybe anybody has now an idea wich is the best practice for you - for me it's all I ca say about that case