Although most of the world understands what a weblog is, many people don't. It's not a word that you'll find in your dictionary, and you'll probably get a different response from every person that you ask. That said, I quite like The Brunching Shuttlecocks' description of a weblog.

Yes, I do know what they mean about those Spiderman photos; no, I don't want to post a link to them. Spiderman is extremely cool, Naked Spiderman Guy is most certainly not… *shudder*