RentCollegeBooks -dot- com...registered it off the drop a few months ago (don't even remember why), hadn't been getting much traffic initially but it had been ramping up this month and seems to be all type-in. Then Monday came and it started going nuts (well, relatively nuts) on revenue - guessing many colleges' fall semesters started on Monday? Anyways, good stuff:
Date - Uniques - Revenue
Monday, August 24, 2009 - 15 - $14.14
Tuesday, August 25, 2009 - 12 - $7.38
Wednesday, August 26, 2009 - 16 - $12.24
Not much but these 3 days alone is 400% the reg cost...would be nice if every registered domain did this, I would have retired already.

Just surprised the traffic is that well paying.