Think Angie's list specifically for Landlords.
The site works, un-related people have actually posted reviews. It gets very little traffic and it's not very featureful.
To motivate myself to keep it maintained and running, I use it to explore new technologies and ways to really stretch the web framework I contribute to (yesod).
Currently, I'm refactoring it to strip as much unneeded code as possible and keep things as simple as the task requires.
Here's a sneak peak of how sweet that makes things look:
Hopefully that'll go live soon.