Can't boycott what I don't use ;)
But yes, these two bills are scary and of the people I've talked to, no-one seems that bothered because they believe in the law to require burden of proof (like DMCA does) except they don't get it when I explain that the law isn't set up to do so, but essentially give arbitrary industries the arbitrary ability to censor, namely the MPAA and RIAA, to protect their outdated and obsolete business models.
If it goes through as it stands, we can safely expect a fractured internet, very likely there will end up having a US divide such that the EU etc will just turn inward and look to ignore US domains. Might also see an end to .com's dominance outside the US.