Well I cant help it... I just stumble across really useful stuff sometimes. Of course, it helps that I love anything that allows me to increase my own efficiency. So here is another little useful trick that I bet you didn't know!Have you ever closed a tab when browsing the Internet unintentionally? (This happens to me sometimes because I tend to mis-click) Firefox has an "Undo" option for that. It doesn't seem to revolutionary, but for me it wasn't something I had considered a possibility until I found it playing around one day. Just right click on the blank tab area and you'll see it in the menu.
So if you happen to have that Paypal tab open and you mis-click to close it, use the undo option and send me $20 while you are at it. ;)
