Corporate supporters of HR3261 (SOPA) and S968 (PIPA) want the ability to take down any web site that affects their profits -- without due process or judicial oversight -- in the name of combating "online piracy." Hoping you won't notice or care, your Public Servants are preparing to give them that right.
For example, Monster Cable (remember "Monster Park"?) considers craigslist a "rogue site" for future takedown under PIPA - apparently 2nd hand sales of cables by CL users are hurting Monster's sales of new cables. (reddit).
SOPA/PIPA authors and supporters of course insist they're only after foreign piracy sites, but Internet Engineers understand this is an attempt to impose China-style controls on the Internet, complete with DNS hijacking and censoring search results. Except in the US, instead of to the Communist Party, that control will go to the highest bidder.
PLEASE read this and be aware.http://www.craigslist.org/about/SOPA