There is a large majority against sopa. Popular websites catch on and start 'blacking out in protest' in order to appeal to the majority against sopa.
It's called a publicity stunt.
I totally agree with this.
After what happened to go daddy of course everyone is going to not support SOPA also the only reason Go daddy got hit so bad was because everyone noticed they supported it and was like "HURRDURR I'M GOING TO BOYCOTT YOU BUT I'M NOT GOING TO BOYCOTT: EA, WAL-MART, NINTENDO AND THE OTHER GIANT LIST OF PEOPLE THAT SUPPORT IT."