I've now got a profile and account on Technorati!
Technorati is a site about blogs/weblogs/podcasts and the people behind them. What I think is pretty wicked is that you can type in a search term or phrase (such as… 'rubenerd') and it will search all the weblogs in its directory every few minutes for the term, and post the results in an easy-to-digest summary page, and in an RSS feed you can subscribe to. Brilliant.
Of course, if you've been into blogging for ages, you'd know about this already… but still.