Why? It's only the most awesome collection of fictional cliches, tropes and idioms on the entire Internet.
It's basically Wikipedia for fiction writers. It's increased my writing ability a thousand fold. It really helps comprehension and analysis of all works of fiction. Unfortunately, it can completely ruin your life because you tend to lose yourself in it and ruin any shows you may have wanted to see because you over-analyze them and forget to have fun watching them.
Still worth checking out, though. http://tvtropes.org
I should stop being a wiki-idiot and get some sleep.