If I'd have gotten into YC, I'd be at #14 right now.
This is the reason I made this! Strangely we'd be at 14 as well! I was quite impressed and surprised at how low most ranking are. Alexa isn't exactly the most accurate measure but still, I've seen ours rise suitably with traffic.
Hah, nice! I run PortableApps.com, ranked on Alexa at 8,171. We get 1.5 - 2 million visitors a month. We've never done any advertising or major partnerships, it's just been word of mouth and organic press coverage. What's your #14?
Um, where is Reddit? At first I thought they were excluding exited companies, but then I saw Heroku at #15.
Also interesting: Hacker News itself (a YC "product/service" if not exactly a YC company) would come in at #6.