Hi AK,
I've done some work/research for a client who had mobile sites. The responses below are based on these past experiences.
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It should include the same/similar page titles. However, you should append the word mobile at the end, so that users immediately recognize that this is a mobile site. Ex: "Company XYZ Clothes- Mobile Site"
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I'm a little unclear about your question, but there is a Googlebot that crawls regular pages and another bot that crawls mobile pages. The user-agent settings on the server should provide search engines with enough information to specifically use their mobile bots to crawl the sites. However, to build the authority of the regular sites via the mobile site, add canonical tags on the mobile site that lead to the regular site. This helps tell search engines the preferred location of the URL and pass authority to that site.
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In theory, yes. However, this is based on the user's mobile device. The issue with mobile rankings is that it is entirely dependent on the user's phone model and this ranking differs phone-by-phone. To help with this, I would suggest creating a mobile sitemap for Google.
http://www.google.com/support/webmasters/bin/answer.py?answer=34648
- The regular version will work, but it will be helpful to append the word "mobile" in the description and ideally, near the beginning of the meta description.
Smartphones work by using the regular sites, so this only pertains to individuals who use mobile devices that can access the internet, but are not considered smartphones.
Best,
Stephanie