Only the Social Network bubble is popped -- which is the majority of companies that YCombinator funds. Social network websites that can be built in 3 months and have zero paying customers or any potential profitability really shouldn't have existed in the first place.
Agreed with pbiggar about trolling. Most YC companies are by far not social network websites. You have not done your homework, or you're just trolling.
I was calling the comment above me catty, which it was. I'm not trolling, but trying to convey that sharp sarcasam doesn't really ad much to a conversation. If people want to downvote me instead of the sarcasm, that's cool (I just don't necessarily understand it).