Ever since I got a Macbook, I use Alfred constantly every day (even bought their powerpack just to support them). I’ve replaced spotlight entirely with it and I consider it much more useful than Quicksilver or other search/launch apps.
I’ve since made a few custom search functions for sites I use every day. They could be useful for anyone so I decided to share them.
The Pirate Bay
Edit: For some reason the Alfred app links don’t work sometimes, so I included the Search URLs so you can import them manually.