My blog makes me about $1k - $2k a month.
http://rochardsbunnyranch.com/blog/
My blog started back when I worked at Lightspeed Cash when I decded I needed to know more about blogs and TGPs to ensure we were doing all we could for affiliates. The TGP is long since gone, but I discovered I enjoyed the blog.
In my blog I document my travels, photos of me and mostly solo girls at different shows - then hint it's possible I'm dating them. I post on a lot of non adult forums (mostly Mustang forums) which allow mw to put a link to my blog in my sig. I also get a fair amount of traffic from google and yahoo pictures searches.