Is there some form of recipe needed for a video to go viral? Sometimes its all just luck we find cutesy stuff like a cat playing a piano so ridiculously good we share it with everyone. And how about Charlie bitting his brother's finger? Was that even funny worth a viral distribution? If you've ever wondered how a video goes viral, here's an explanation by Kevin Alloca, YouTube's trends manager. Because not all videos are created equal.

He recently delivered a presentation at the TEDYouth Event, and he tries to get to the bottom of what spurs virality. Check him out after the jump.

[TED]