Steam's weekly top 10 sellers by revenue can now be seen at this link. Valve's own titles "Left 4 Dead" and "Team Fortress 2" are still selling strongly. It is perhaps more surprising that titles like "The Penumbra Collector pack" and "Freedom Force freedom pack" are in the top tell sellers by revenue despite having ticket prices of less than €6 each. Valve have already admitted to us that selling stuff cheaply works. Now we can see the truth of this for ourselves.
It is annoying to miss a special offer on a game you want to buy so it is nice to see that Valve have made it easier to keep up with their special offers by including a new "specials" tab on their main page. I wish they would make this into some kind of feed but I guess they still want folks to visit the website to checkout all the full price titles.