This is a very good post on ReadWrite Web. I was waiting for some analysis of what OpenSocial really means for the world of social networking, and I think that post sums it up well. To put it into my own words: OpenSocial basically means that application developers now can developer for 2 platforms instead of potenitally tens or hundreds.

Developers have been writing and/or porting software for more than one platform for as long as they’ve been writing code. So really, this is nothing new; it simply means that OpenSocial and Facebook are (probably) the 2 platforms you’ll have to learn when developing applications for social networks.