Modifying css on the fly for free
Thanks to Frans Bouma who mentioned a plug in for firefox which allows you to modifyin css on the fly, i.e. at the client and see the results.
To do this you need to use Chris's Web developer toolbar for firefox which you can get from http://chrispederick.com/work/webdeveloper/.
I had a problem with my blog (which you may have noticed if running FF), I solved it in seconds due to this toolbar.
Really great tool, and its free.