I have a website that I designed and built from the ground up that has been ticking over by itself for around 4 months now (I haven't touched it).
The website is Business Networking Events | Open Networking
The reason I haven't really done anything is because I can't find a way to monetize it. Though, I have tried.
First I tried charging network organisers to post events - £15/yr. Seemed reasonable, but nobody would pay.
Second I have tried affiliate ads - nobody is buying. The site is not a buying site; it's an information site.
I was thinking about putting AdSense on there but that ain't going to make me rich. In fact from what I've read about AdSense is you need a million hits a month to make decent money - this site get around 500 uniques.
So I put a lot of time into developing this site, and it is doing it's job - people are finding it, and using it. I would like to earn at least a small passive income from it's existence though - any ideas?