I use WordPress. It's got everything I need and you can mod / hack it really easily. It also integrates into a site design easy.
If you need hosting for your blog, I can give you some space. More info is available at :
http://www.ceejaycee.net/forum/viewtopic.php?t=7
email me support [at] ceejaycee.net if you're interested. Make reference to MP! and I'll double your space.
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