Gizmodo readers dissect Beat Freaks' Magic Challenge

All this week, we've been carpeted with questions on how Beat Freaks accomplished their magic ball work on the America's Best Dance Crew Magic Challenge. The gadget gurus and Gizmodo.com posed the question to their readers. Some of the suggestions: magnets (which prompted the comment "Incidentally everyone in the audience was RIPPED APART BY JEWELERY SHRAPNEL"), CGI, string theories, wires, ball substitutions, and special buoyancy materials.
Read it here and stay confused!

And, if you want to watch it one more time to assess the explanations, here's the official video from Fanscape: