Brand consulting and advertising firm Hanon McKendry is holding it second annual online Super Bowl ad poll. Viewers of the game will be able to visit superadbowl.com at the end of the first quarter to cast their vote for their favorite commercial. As votes are casts, the results will be compiled immediately and posted so fans will be able to see how their favorites compare to others. "Super Bowl advertising is big entertainment, and everyone wants to voice their opinion,