I'm experimenting with a new speed test feature in Fasterfox. Here's a sneak preview of Fasterfox 2.0.1 which includes this new feature:
To use: right click the Fasterfox icon and select "Speed Test." The speed test allows you to measure the mean/median load time for a specified number of loads of a given web page. This is very useful for those wanting to test the rendering speed of their webpage.