[aaronbrethorst]

Which is named after their physical location in Washington DC, 18th and F Street.

[bshimmin]

Oh, thank you. I was desperately trying to work out if this was a "A16Z" (Andreessen Horowitz) thing...

[aaronbrethorst]

I spent 15 minutes trying to figure this out the last time they popped up on HN. It's surprising to me how difficult this was to find out. I think it was buried in a FAQ somewhere.

[ChristianGeek]

I thought it was an 18-year-old female and wondered why that was considered worthy of a headline.

[jdavis703]

The thing you're referring to is called a "numeronym."

[bshimmin]

Lovely word. Thank you very much.

[chrisBob]

I always assumed it had some military symbolism. In the Army, all of the Special Forces jobs are 18 series (18A, 18B...).