Between TD moving to Boston, the two us moving our stuff here and putting it in storage, and finally moving into the new house, we have given away a TON of stuff. Mostly we have taken stuff to Goodwill or Salvation Army.
But I had several things that I had been dragging around, not using, but that were "nice" or at least worth something. A suit from J Crew (thought I would need it for interviews), several things from Anthropologie (purchased on sale and never really worn), my 35mm SLR camera. Etc Etc!
On a whim last weekend I gathered up all this stuff, took photos and listed 20 things on eBay. I have been pretty stoked that things are actually selling!! There are 3 more days on my auction, but so far I have made over $150 dollars. The process does take a lot of time, so this won't become a regular thing for me (and there's not much left to get rid of - unless I start in on TD's stuff). But I would highly recommend using eBay if you have some nice stuff that you are looking to get rid of.