I used to buy a lot of domain names. I have since stopped, because it turns out they tend to go unused.
One that I currently own and am determined to make into a real live website is HBGHaiku.com. I think it could potentially be a fun little website, and I imagine there are a few people in this town who might find it entertaining to submit a haiku. Here is the design I am working on, now I just need to bribe a developer to build it for me.