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In my experience, sub-domains are viewed as a "new" website in Google's eyes (to a point). You still inherit domain authority but not as much as a new page would (www.bharatdesi.com/hyderabad).

Social Signals are a factor in SEO but I believe it would be more beneficial for you to focus on creating the best possible usability for your app which in turn will get you the natural likes and shares you need.

Social Signals are very helpful for trending topics. We did an experiment with Social Signals and found that they do push up your rankings but only for a short period of time.

There was a very clever Adwords campaign by Converse. Used Adwords very intelligently.

Not the Titles but the URL needs to describe the page in as few words as possible.

instead of /5414668-women-s-invicta-swiss-16-diamonds-two-tone-mother-of-pearl-dial.html aim for something like** **/invicta-mother-of-pearl-dial.html

It also depends on what keywords you are aiming for this page. If it's "Woman's Invicta Swiss Watch" then you need to use that.

If you haven't done so already, you need to create a 301 redirect from the old domain to the new one.

Google wants to find the most relevant pages to show it's users so those "inner" pages you are seeing are probably the most relevant for the keyword/phrase. It's not a bad thing at all, so don't stress over it.

Yes, the default action is to follow unless specified otherwise

Hi Vikas_Rana

This will depend on who is going to be managing the site. Installing Wordpress throughout your domain is ideal because everything is there already. All the tools and plugins are available in a heart beat.

Some admins prefer to use pure HTML websites because they can customize it according to how they want it, but it does require a little more effort and development ability.