Okay.. I take back my words, Beyonce isn't the WORST lipsyncer of all time . She's actually the BEST lipsyncer of all time. The only thing that makes some of you (beyonce's hardcore fans) think that she's not lipsyncing ,is because she rehearsed her ass off for that perfomance and for the pre-recorded track . She's kinda of a robot.
The most obvious part is where she laid on the floor, her singing was at the same level , she was moving the mic right and left and it was just like a flat track playing.
At the first part where she says" BET.. I'm ready ,let's go get em" , if you watch that part a few times ,you will realize that there is something wrong. There are alot parts that she seems part-of-a-second late, but those were the most obvious parts for me.
She didn't even bother to sing/lipsync the chorus . OH! I forgot that she was doing some kick ass jungle moves during the chorus.
http://www.youtube.com/watch?v=c7P4uZfumb4
Beyonce's live performances are as obvious as her lipsynced ones .Use your senses!