I'm having trouble accessing www.fafsa.ed.gov with Chromium, I get an "incompatible browser detected" message. I tried using the "User Agent Switcher" extension for Chrome but it did not work, however Firefox 4 and their own "User Agent Switcher" extension did work. I prefer Chromium, but being a student, this is a bit of a "deal breaker" for me. I figured I'd ask before I made the switch to fx4!
You can run Chromium with a modified user agent string using a command line argument. To pretend you are using Internet Explorer on Windows, run (Alt+F2 then paste):
This only works if you close all of your Chromium windows first.