I've been using Posterous for a about a month now as a micro-blog for work. I find it incredibly handy to email small blurbs about what I'm working on or planning to work on. In the past when it came time to write down what I've done, I used Graffiti to blog on my Windows Home Server. Graffiti isn't the easiest format to use, especially when having to remember what I did at work.
I'm not going to give away the domain I chose nor the password I protected it with. (Feel free to hack it if you can find it! - j.k) Hopefully this will help when review time comes around.