As usual with Steam sales, I don't buy anything unless it's one of the "featured" sales, just in case something I want ends up being "featured" after I bought it (if you check, there's more on sale than just the featured games). Then, on the last day, I'll buy anything I want that's on sale that didn't get "featured". Nothing I want right now (I will say DNF for 6$ is a great deal if you're a Duke fan, but I already have it), but more deals will pop up every day.