check out zipskinny, where you can get the census-data skinny about home zip code, or any other zip code in the u.s.
(via, well, i don't know how to credit this one. i first found out about it from chris a couple of days ago, when i didn't have time to write a post. then i forgot about it, until i saw it again at LGM. but the LGM post credits yglesias who credits henley who credits unfogged who credits chris. since all roads seem to lead to chris, i guess he should win. congratulations chris, you get the exalted credit!)
hey, and that reminds me of something else i forgot to link to earlier: maplight, a site that makes it easy to compare a candidate's voting record with the contributions he/she received. check out your favorite congressional representatives and see the corruption in action!
(via, this one is easy, len by email)