It just occurred to me that you know you've made some pretty serious traction as a startup when HN posts about your company no longer have something like "(YC W08)" appended to the end.
I think it has to do with Heroku's target market being so similar (identical?) to HN's demographic. If that weren't the case, I doubt we would all recognize Heroku so easily.
Thanks for pointing that out, because I had completely forgotten that this was the case. (I actually can't remember at all, but I figure that I knew that from when they came out)
They did go a long way in a short period of time. Winter 2008 feels so close.
Yeah, I'm in the same boat as you. I see successful, "big" companies mentioned here with "YC-whatever" on the end and am blown away by which ones are YC alumni!