OK, I've started analyzing the sales data I just finished processing. The table below shows District prices and sales volume for June 2009, by neighborhood. Old City I and II had the lion's share of the month's transactions.
As you can see below, compared to June 2008, 73 more homes/condos sold in June 2009, but average/median prices fell and total dollar volume fell, too.
On another note, as you can see [waaaay down at the bottom right of this page] I've started investigating what I can do with this site and the "Facebooks". I've even started a Group, DCHousingPrices.com. Given that the NY Times is reporting people are leaving Facebook, maybe I've missed the boat on this one. Should I check out MySpace?