Like I've said before: I'm a reasonably young man, and this is my first go-around having actual money as these various economic cycles occur. I watched the housing bubble closely. And the whole way down the realtor associations were screaming, "There is no bubble! This is the best time to buy!"
I think it's something we all know, but it feels more "real" to me, because I witnessed it. The lesson is, don't listen to the opinions of people whose livelihoods depend on maintaining the run-up. Keep that in mind when you read these blogs, written by techies, with comment sections filled with VCs and and CEO/CFO/CTO's of 1 employee companies waiting for their funding.