Indie Games Summer Uprising. Though the devs are doing all the marketing on their own, they still need your help in two ways.
First, the organizers want you to vote on two of the featured games. Developer voting for eight of the Uprising slots is going on now; those games will be released at the rate of one per day from August 22 - 31 . On August 1-15, community voting will open up for two additional titles. These two games will then be released at the end of the Uprising, on September 1 and 2. You can follow the promotion on the new Uprising site.
The second way you can help: buy some games when they come out. Obvious, really.