I know a thing called firebugs exists but I am looking for any other firefox plugin that gives useful performance information. What I would really like is something that would record my clicks and then tell them how long each one took in a very readable way. Any tips?
The other half of the necessary pair of web debugging tools is fiddler. [Firebug for client side debugging]. Fiddler has great profiling tools (if you mean how long does it take each component to download when I click on a link), scripting and monitoring of client/host web communication. Here's its home page. Fiddler runs with all browsers you have currently installed.