What's the difference between Socket.IO and PubNub?

More at: http://www.pubnub.com "What's the difference between Socket.IO and PubNub?" is definitely an FAQ here at PubNub. Most of the time, developers are looking for a way to send and receive data in realtime to build realtime web, mobile, and IoT applications. But PubNub and Socket.IO are actually very different. In this video (and here: stackoverflow.com/questions/16393828/socket-io-with-pubnub-why), we explain how. -- Music: "4227" by Segoe