I'm currently working with a friend on http://steamcustomizer.com/
It's a site and tool that allows users to create, share and install custom skins and themes for the Steam client.
Currently we get anywhere between 60,000 to 80,000 Steam users use the site every month. Given the high use of AdBlocker amongst gamers we don't get a much more than $100 per month from Google Ads so we are looking at using slots on our site to promote games from Indie developers, eventually for a fee.
For now, we're looking for people with games for sale on Steam that we can promote for free as a trial in exchange for sales data before and after to see what impact we have. We've already worked with one game, Hue, which has picked up a number of awards, including a BAFTA.
Does anyone have a game or know anyone that would be interested?