I have been waiting for Yahoo! 360 since I knew it would be coming out earlier this year. I am excited for this product because I think social networking of this style is the key to offering us more relevant search results.
By doing some non-obtrusive profiling of users and their online habits I think search engines like Yahoo! can learn what we are looking for when we are online.
The problem I had however was that this was invitation only. Sure I had my email address submitted to them, but I wasn't really expecting a formal invite from Yahoo! to join Yahoo! 360 just yet.
So what did I do? What any good researcher does - I went looking for sites offering free invites.