Taboo is a very useful “hack” for Safari that provides a warning before a user quits or closes a winow in Safar with more than one tab open. This is extremly helpful because Apple built the damn Previous Page button so close to “Close Window” button. I can’t tell you how many times I have accidentally closed a window full of active links I was still using in Safari. Kudos to Adam Cohen for developing this great hack.
Image courtesy to Adam Cohen’s Obsessive Compulsive Development, maker of Taboo.