TheBigLLS: 1 question though, how you, yourself follow it? Bookmark all those sites and check every few hours? add-on for browser?
madth3: 1. I have a fake twitter account that I use as a reader of notifications (not unlike RSS feeds). Most of the sites twit new bundles and deals.
2. Steamgifts had the good idea of highlighting the recent / active threads in their forums and I have caught a deal or freebie there too.
3. In rare ocassions I do remember to check a site which I have not seen in days.