Wow!
Unbelievable. That makes it one of the most prolific single-genre story archives on the web, by my estimation; Nifty and ASSTR are perhaps the only other larger repositories (and those sites are far more broad in their scope).
Congragulations on keeping a single entity together long enough for that to happen!
Looks like the "lucky 10,000'ths story" was one of a new series called Digital Boys found here; http://www.eunuch.org/Alpha/D/ea_124243digital_.htm .
Let's keep 'er going for another 10,000, administrators!
What a milestone!