Some interesting reads on MySQL Performance:
The blogs that are posting the most news and analysis are MySQL Performance Blog, Mikael Ronstrom''s blog, DimitriK''s blog, and Mark Callaghan''s blog.
Some nice Printable Cheat Sheets over at AddedBytes.com. As a CSS newb the CSS Cheat Sheet is helpfull to me :P. Over here you can find a nice VIM Cheat Sheet. There is even a Mozilla Firefox Cheat Sheet.
To complete the Link Spam, Pete Freitag has assembled a Cheat Sheet Roundup.
Just found a new toy: apt-build.
Beeing on Debian (based) Systems most of the time (if you don't count my dayjob which is exclusivly RedHat and Fedora Systems), this comes in handy if you don't like how Debian thinks software should be build. Time to mess up my Ubuntu Desktops!