Explorer Destroyer
slayer99 writes "I came across Explorer Destroyer yesterday, which is a project that aims to increase the market share of Firefox in a slightly more proactive way than is usual. They provide some code which you add to your front page which presents a banner to IE users urging them to switch to using Firefox. As a bonus, you can potentially make some money via Google's Firefox referral program."
http://www.quirksmode.org/
Reproduce it yourself. Especially the broken alpha channel support and the broken 'em' unit support in IE are annoying.