I've signed for something that I'm not sure I'll ever understand how to use, with a most confusing name:
http://del.icio.us/.
Richard has signed up too, and we've both also got things on
Technoarti. This is all part of the brave new word of the web, semantics and blogs. Or so confusing that I'll never get to the bottom of it. Apparently I can now tag my posts so that other people can find them easily. Including even me. Well, I'll post tags and things when I figure out how to do it.
And you might fancy having a go too.