“ Though the bill would limit pirating, it would also block sites liek facebook, Youtube, and Deviant Art, all of which I am a member of. Keep in mind that if we can’t access these sites, it could give Terrorists and other evils a chance to exchange valuable information right under our noses without us getting the chance to crack down on them and thus, creating a greater danger snd threat to Americans. I fear that if this SOPA goes into affect, we will see an increase in terrorism and the government won’t know about how these attacks were planned, because the sites that the terrorist would be using can’t be viewed by the government themselves! Stopping Online Public Activity will Start Overseas Planning of Attacks”

Your argument is a non sequitur; there is the argument that the bill will block Facebook and YouTube. The The argument “Terrorists and other evils a chance to exchange valuable information right under our noses without us getting the chance to crack down on them” does not follow.
Deviant art (which I also a member) YouTube have a long history of cracking don on infringement if the owners or the media will press them Deviant Art had the mechanism to shut offending users accounts and a way to license my work. All my work is cover by creative common 3.0 license.
Now I am going to take you argument to its illogical absurd conclusion: if face book and YouTube shuts down, will our intelligence agencies not have the ability to track terrorist data? Terrorist already have other venues, if it was possible YouTube and Facebook shuts down, would this be better because Terrorist will be deprive of two more venues to spread their propaganda and exchange information within their cells.
The problem is you and other has not yet even given one substance argument against the bill you need to read the bill and present a valid argument in opposition by using the bill