We certainly might be heading into a bubble, but so far the effects have been limited. WhatsApp isn't very indicative of a bubble, same with instagram, snapcha

We certainly might be heading into a bubble, but so far the effects have been limited. WhatsApp isn't very indicative of a bubble, same with instagram, snapchat, etc. because it's the same company (FB) making single bidder offers. That hardly a bubble makes. The rest of the market isn't necessarily in a bubble because for the most part companies going public are either making money or have demonstrated that they can be making money if they stopped growing.