"Google Play" is essentially just a rename of the Android Marketplace.
To be honest I'm not convinced. Once again Google have half-assed their way into a market dominated by Apple and the signs show. I am a long-time Android user and ICS is the first time I've really enjoyed using an Android phone, but it's taken Google to get this far and I'm worried that this move is one of a large number of moves that will cheapen their brand.
Yeah. I saw a shiny new button in gmail and clicked it...not impressed. Why are you trying to sell me an Android App from my desktop computer? I don't even have a cell phone :/ Feels bad, man.
I would use it...if it were free...but why pay for something when I could use Grooveshark for free (and happily support their ad revenue)?
Everyone seems to be copying everyone else. IE9 pretty much stole Chrome's design, Win8 stole ChromeOS's mobile, web-only design, Google Plus stole Facebook, Bing copies Google...meh. And most of these copiers haven't been very successful. (I realize that the actual extent of this "copying", as I term it is very debatable - didn't want to get into that debate - it was really more of an afterthought)
Before asking, do a search... if you don't find the answer, then ask The purpose of this forum is to help others in the community, that's why it's called Sitepoint and not Linkpoint. SP Guidelines - No fluff.