So...I'm going to join in the fun and wibble about stuff. Mainly about bioinformatics because - as opposed to gnat - I actually do it. And especially about microarray technology. I'll try and find time to write properly, but the current plan is to post interesting links here, rather than fill my work logs with them.
Let's start off with The Open Bioinformatics Foundation, home of the bio* projects and one of the first sites you should visit if you're interested in open source in bioinformatics.