ReadWriteWeb

Last month, Facebook finally announced that they would allow users to pick out custom usernames for use in vanity URLs that read www.facebook.com/username. At the time, users were advised to "choose wisely" because the username they selected would be stuck with them for life. That didn't stop some Facebook users from picking out names that were clearly meant as jokes, though, including the guy who decided to go with "rickroll" and the other fellow who just kept pressing the letter "a." We're not sure if those folks are now having regrets about their choices, but if so, they'll be happy to know they now have the option to select a username yet again. But only once, says Facebook.

There's a lot of information about many of us spread around the web and though privacy is important to discuss - there's also another side of that coin. It can be very useful to tie together info from disparate sources about a particular individual. Today I saw a tool for finding those various profile pages that really impressed me.

About this time last year Google's Brad Fitzpatrick, also the creator of OpenID, led the development of the Google Social Graph API. It's a search engine for all the webpages that we identify as profiles online and it tracks the connections between pages linked together for a single person. At a small event today in Sebastapol, California, British developer Glenn Jones demonstrated the most compelling tool I've seen yet for leveraging this powerful technology.