Not really sure what to say about this, but congrats to these guys. Two weeks in the App store, a monster raise, insane user base, not sure if it's any differe

Not really sure what to say about this, but congrats to these guys. Two weeks in the App store, a monster raise, insane user base, not sure if it's any different/better than WhatsApp or others. Seems like they took a lot from Facebook's chat app, among other things. Proves you don't really have to reinvent the wheel here but crazy, rapid user growth and a nice raise to get them to the next level. The constant high-profile funding of basic and regurgitated social apps is difficult to comprehend.