For those of you who are avid Stack Exchange users you'll know that most graduated sites have a place for free community advertising for stuff like open source software, other SE sites, and other stuff that the community is interested in. Obviously we can't get it on our site since we are still in beta, but we could and should get some ads for our site.
They're refreshed every year, and they are just getting started up again so it's a great time to start. This post is to brainstorm where and what we want to advertise on the SE network. Feel free to add some sketches and ideas.