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This is a pretty complex question that goes beyond just SEO and extends to branding and business strategy, so there are no simple answers here.

I personally think having a single site is easier to manage, and since all the products are related, it could lead to additional sales as well.

Even though some link equity is lost through 301 redirects, I don't see 3rd party retailers outranking your new site for "snugees" just because you switch from "snugees.com" to "snugeebrands.com".

Just create a relevant landing page specifically for snugees, and it should continue to rank well, and the other products should benefit from the link juice that is being transferred over from the old site.

We use BazaarVoice reviews for our ecommerce site too. What we do is right below the iframe reviews, we have a link that says "click here to see more reviews". When you click the link, it opens up a div with the html version of the reviews. So similar idea to what you are proposing, but less "cloaky" than a noscript tag, and it doesn't impact user experience much.

BazaarVoice can also do html reviews that are not iframed if you have a server that can handle server side scripting like PHP (which unfortunately our legacy Yahoo store does not).

Bing doesn't really have an equivalent for Panda or Penguin, so some of the tactics that used to work in Google (which will now harm you) can still work in Bing. Both sites take into account similar ranking factors but have different indices and different weightings for the factors. I like to think of Bing as being 1-2 years behind Google in terms of sophistication.

It should be on every page of your blog. Here's what the code looks like:

rel="alternate" type="application/rss+xml" title="Your Title" href="Feedburner URL" />

You cannot, because the rel=publisher tag is a way of linking your website to your G+ page, and you can only link your page to a single website.

Yes, we manually bulk upload the HTML reviews every couples weeks or so to keep them fresh. We also had BV noindex the review.subdomain so that it wasn't competing with us in the SERPs (have them add a noindex tag in the header as well as your Google Webmaster Tools verification code, so you can instantly deindex all the pages).

Where are these pages being linked from? If you want these pages indexed, you may want to try making them more prominent in your site's navigation and architecture. Listing them in a sitemap can help them get discovered by Google, but actually linking to them from your site will have much more impact.

Also, I notice that the site is only pagerank 2, and already has 5000+ pages indexed in Google. Google limits the number of pages it indexes for sites based on their pagerank, so you may want to consider improving your PR so Google indexes more pages from your site.

It can be a good way to drive long tail traffic to your site, it can risk a Panda penalty if you generate too many pages. Many sites allow their search pages to be indexed, and it comes down to your domain authority, number of searches being done, amount of unique content you have, and your risk tolerance. A safer approach is to simply log all searches done on your site, then create unique content around the terms that come up often, this can be a good way to identify good keywords to target.

Creating a specific website for mobile users, whether by responsive design or dynamic serving is going to result in a better user experience than just serving the regular version of your site, even if it's just making the font bigger and the buttons a little easier to click on. As mobile adoption grows in usage, you will probably want to consider mobile design.

If you go into Google Analytics, and go to Audience -> Mobile -> Overview, it will show you the percentage of your traffic that is mobile, and their usage metrics. Based on those numbers, you can determine whether a mobile re-design is worth the resources at this time.

Yup. Once you have the GWT verification in the header, you should be able to deindex the entire subdomain instantly.

Google does treat pages with parameters as separate pages. The best way to avoid this is by not linking to pages with no parameters like example.com/page? Redirecting something like this would be tricky, so I would recommend just putting in a canonical tag in the header for parameter pages that don't significantly change the content of the page.

Well, what do you think is the better experience for the user? Both 301s and canonicals will transfer (most) of your link juice. Do you want users to end up on your CMS or on your blog? Depending on the answer, choose the 301 or canonical.

50% sounds pretty significant. Responsive design is a great solution for news sites, blogs, and other sites with relatively simple user requirements. If users do more than just read content on your site, I'd recommend going with dynamic serving for a more tailored mobile experience.

BV does provide a newer format for their reviews, if your server allows server side scripting such as PHP. I believe it's called "Cloud SEO". This is the simplest solution.

If you can't run PHP, then I would recommend talking to YourStoreWizards (http://www.yourstorewizards.com/). They provide customized solutions that can automate the data pulling and updating process.

As far as reviews.mysite.com, you want to get that de-indexed as soon as you get the HTML reviews on your site. Otherwise, not only will the subdomain compete with your main site for traffic, bu tall the reviews on your site will be seen as duplicate content.

An "areas served" is probably the best approach, since you don't want a big spammy footer that is present on every page (remember, every link on a page lowers the value of every other link on a page). You can highlight a few of the larger/most popular areas in your sitewide nav, but I would avoid linking to every single one of them.

You need to keep those 301s in place as long as you have links pointing to the old site that you want to get credit for. If you can contact the owners of the sites that are linking to your old site and get them to change the links, you can remove the 301s. Otherwise you will want to keep them in place.

We use BazaaVoice for the reviews on our site, and it's a solid service. If you are using an older version of BV reviews, then you definitely want to move over to Cloud SEO because those are generated through server side scripting instead of using iFrames like the old implementation.

What query are you searching for? The website comes up fine for me.

Having semantic markup doesn't guarantee that Google will display rich snippets in the SERPs, it's up to Google to decide whether rich snippets would be useful or not. If it is showing correctly in the testing tool, then the code is fine, it's just up to Google how to display your content. Schema.org is probably the best semantic markup to go with at this point, and it's supported by all the major search engines.

This is a good article on adsense layouts with some examples:

http://www.seomoz.org/blog/guide-to-ads

Bottom line, you want to keep your above the fold ads to a minimum and make sure that your content-to-ad ratio is high.