I kept one in the past, and just started keeping one again. I'd post the address, but right now the site isn't worth sharing
It's really interesting seeing the responses you get when you keep an online journal. Some people think that you're crazy for publishing such personal things about your life online, and some people start to act like they know you from what they read at your site. I personally started password protecting my journal, because I felt like a few people were "getting too close." It's still fun, though.