Not sure most folks would want to give up their anonymity for it, though.
I'm not sure why some people think that the rest of the 99.999% of the world gives a shit about anonymity? If they did, I doubt you would have ever heard of Facebook.
Only a small portion of geeks, care about online anonymity. Even most geeks I know don't really care. Now, I can understand anonymity in some places (like some forums), but for everything else........ not so much.