Never attribute to malice what can be explained by math.
(Edit: BTW, Drew & Aston used to be regular posters on Hacker News, as did drusenko of Weebly, coffeemug of RethinkDB, lacker of Parse, danielha of Disqus, aaroniba of Etherpad, and a bunch of other YC founders I've forgotten. When they realized it was a good idea to start a company, they quit posting, got into YC, and started building their companies.)
This is really really really true.
On a more selfish note, I also figured that people discussing this would cause me to learn about more interesting companies with ties to HN that I hadn't heard of before.
I probably would have dismissed Dropbox if I had seen that, and look at them now.
I hope this becomes a big list so I can read them all.