The Cohhilition

Reddit has a great Guide to the steam summer sale. It links the games prices and whether they drop steam cards or not. Also Redditors comment on which are the true deals and which have been cheaper in the past.
https://pay.reddit.com/r/GameDeals/

Fallout New Vegas is currently %66 percent off and all flashy saled strangely enough Fallout 3 is %75 off with no flash sale for another 5 hours.