Uber, Airbnb, and other hot companies like Square, Dropbox, Box, and Fab are generating lots of revenue and (probably) all growing much, much faster than any of the companies listed above. Sure they have smaller bases and thus can grow at faster rates, but they are becoming quite big, quite quickly. Having that many companies growing so explosively doesn't happen so often. And that's not to mention the growth that Zynga and Facebook also are having. Kleiner Perkins said Zynga was their fastest growing company in history - and they backed Amazon and Google!
To be clear, I'm not talking about the bubble. Just pointing out that there are many companies in this current wave that have obscenely strong revenue growth (Instagram obviously not being one of them)
Of course the best thing to have is tens of millions of users and revenue (Zynga, OMGPOP).
If you don't have anything good to say don't say anything at all.
(paraphrasing)
I've also seen it attributed to Mark Twain as well.
(a) We're not in a bubble. We're in a revenue tsunami like nothing any of us have ever seen in our lifetimes.
Instagram didn't have a single dime of revenue. and the CEO basically waved away any thoughts of revenue when pointedly asked about it in an interview.
Facebook, who has 800M active, engaged users has only $4B in revenue. Is that what passes for a revenue tsunami these days? Guys, a revenue tsunami looks like double digit income growth quarter after quarter.
NB: Kudos to the CEO of instagram for making out like he did. But it's not an example to follow. Unless you like failure.