As a long time user who profited from their first free download promotion, I have been wondering how the hell whatsapp can remain profitable for many years to come. Moving to .99 cents/year sounds great, but expect a massive user exodus.

Many users out there are stingy as hell. I have actually heard people argue that they don't want an iPhone because you have to pay for whatsapp...

Let's hope that their dominance of the market is enough to incentivize users to pay forever. Oh, and that they do not actually sell out to Facebook.