I have a small amount of ads set up on the site (they exist only on the front page), but overall I dislike them so very much that I intend on never including much (eventually I'll get rid of the front page one too), and most definitely not doing the Facebook-style targeted ad things.
We don't need everyone following our every move on the internet.
I'd describe the community as small, easygoing, and very welcoming. There's not a huge amount of people, so things tend to move along rather sedately, but that makes it easier to keep track of what's happening.