Here's a Tedtalk video that explains everything you need to know pertaining to SOPA/PIPA in 14 short minutes :
http://www.youtube.com/watch?v=-LEb_D2SD3kWatch it. It is concise and easy-to-understand video. You don't have to be an IT major or computer science major. Again, watch it if you're living in the USA and value the internet. SOPA, if passed, will change your life whether it is directly or indirectly. China already has something similar to SOPA and trust me, you do NOT want it to become like that here.