I've been using Firefox for a while, but just found out something that was really useful.
I develop alot in asp, some aspx and a bit of php. Debugging in asp is a bit painful at times.
I just found with Firefox, you can do a view source, keep the source window open, make changes to your code, ftp it and then refresh the existing view source window with an F5 to see if the code is doing what it's supposed to....sooo much better than the notepad (or your favorite texteditor) view of code that IE gives you.
I'm sure that's something the proper webmasters here knew already, but it's something that's going to save me a load of time opening and closing view source windows, so thought I'd post it anyway.
It sounds a good feature, but it doesn't work on my version (1.07) of Firefox in Linux. :( It works however in Seamonkey 1.0, but with a Ctrl+R rather than F5...
BTW, sometimes you have to be careful with Firefox's view-source - the source code displayed is not necessarily the same as that of your original file. The view-source shows some corrections made by the browser to the original source when the latter provokes a bad parsing error - for example if you leave out a > on a tag such as this:
You will actually see:
The extra > having been added to make the page work.