I change the layout of my page with CSS depending on the amount of space the device has to work with. I use semantic HTML so if there's no style sheet support it falls back to just an easy to understand HTML page. My urls are the same for every device that comes across the website no matter what device or browser they're on.
However, I read through "Google's SEO Starter Guide" and it suggests that I should let them know about a mobile version of the website. This seems like the right thing to do with the recent explosion of people using mobile devices to surf the web and how much attention Google is paying to it. My issue is that all my URLs are the same and Google appears to want mobile content served in a special way ( WML, XHTML Mobile Profile, Etc...) so I'm not sure how I should approach it.
Should I even bother submitting a mobilesitemap.xml to Google? If I do should I append something to the url to make it different from the regular site like "?mobile"? Should I change the doctype when this is present and hope I never anyone arrive at the link with IE? Am I worried about nothing?
Also, is there a difference between a "mobile site" and a "mobile friendly site"? I see Google embracing media queries so it leads me to think that I should just sit back and let Google so its thing but I want to make sure I'm not missing out on traffic for my clients.
Any insight would be awesome.