iMacros for Firefox is the Web automation solution I have been looking for. Why iMacros? Because:
To give an idea of how exciting I found iMacros for Firefox, I immediately wrote 2 iMacros after installing iMacros that I have been wanting to write forever (a downloader for the titles of my blog posts and a front end to our local real estate browser to jump right to the properties in our county).
I have only scratched the surface of what can be done with the freeware version of iMacros -- if you need web automation, iMacros is worth a look.
[Flash and Java can be supported through the DirectScreen command (as yet untested by me, as DirectScreen is only avaiable in the paid editions).]
[Ob.Perl: Once designed, something like iMacros would be relatively easy to write in a Firefox-embedded Perl.]