All those anti-SOPA letters and writings are useless and even hypocritical until people who write them stop supporting SOPA with their money. If you are not going to endure the inconvenience of boycotting SOPA supporters (Apple, Microsoft, MPAA, RIAA and others) to protect your freedom, you probably do not deserve the free Internet. Freedom has its price.
It's a pity that your life is so dependent on some computer vendors and media companies. Still, if you pay them you do actually support SOPA and Internet censorship no matter what you say. They really do not care what you say as long as you pay.
There is no way to protect your freedom without sacrificing anything. It may be inconvenient to be principled but without principles you only make the world worse.