wot iz spel? wi ar prooo 0va 9000 gramarrr lelz! In all seriousness, I've heard this song before and it's great. I had it on my iPhone way back, but have since deleted it. Despite how good this song is, everyone makes grammatical mistakes sometimes - us on the Contribution Team included!
Contribution team members are trained by their teachers (basically whoever they have learned from). My English teacher showed the whole class that video awhile back, too. Contribution team members should be trained, though...