It gets 50 ish hits a day through 3 articles I wrote in 2008 (although yesterday it got 97 hits this was a blip).
Anyway it is monetised using adsense and the CTR is very good averging 21%.
Long story short this site brings in a steady $5 every single day ... not my best earner. However I really love this one because I do nothing to maintain it at all, it really has been a case of set and forget.
my magic formula
1) Find niche keywords - I actually used Micronichefinder for this one. But now use a different approach. All keywords are based around exact match traffic counts.
2) Build a mini site - I wrote content of 500 words minimum per page.
3) Article Marketing - I wrote articles for each of the pages created. However 3 in particular are driving most of the traffic.
That's it ... took me less than 3 to 4 hours work total and is making me a nice little amount each month.