Just because this forum doesn't get a lot of participation doesn't mean it can't be useful to theater lovers: DCTheatreScene.com ("Washington's Liveliest Theatre Website") was founded in 2005 by Ronnie Ruff as "DC Theatre Reviews," and incorporated in 2007 - changing to "DC Theatre Scene, Inc." and graduating to a larger format.
They also partner with Theatre in DC to provide ticket buying on their website. (Their website also says they've partnered with Goldstar, so I'm not sure what this means - maybe Goldstar deals exclusively in half-price tickets.) Boy, I remember the days when there was only one TKTS outlet, in Times Square - I used to go there probably once a week.