thats what i also wondered once...must be a lot of CPM based campaigns...though time and again CPC ads appear too.. image ads are also seen quite often...
oh course that would depend on what its related too... Im sure if its directory links or something it will convert fairly well.. or webmaster software so basically saying webmaster resources..
I was looking at that earlier today. I saw the put your advertisement here at the top right hand corner. There is a lot of traffic on this site ,so im sure you would do well.