"The truth is this: Bubbles don't exist without my aunt's mutual fund getting involved or my next door neighbor getting told to mortgage his house to invest by his financial advisor. Web 1.0 was all about IPOing on the nasdaq and fleecing the public with business models that disregarded profit. This time around things are different. At every stage of the process you see startups with business models. Guestlist, Github, FreshBooks, heck even Groupon, are making nontrivial money relative to the valuations and expected future growth."
And the money is starting to come in from my Aunts pension fund (Facebook buying instagram because they knew they were going to have her money within a couple months). Just barely starting, so we've got probably 2 to 4 years before the pop actually happens. But what are we supposed to do while it is happening? We can warn people for a while, but it won't change anything. Get money while you can, build a warchest like paypal did and get ready for the winter of 2015 to 2018.