- Online gambling - More or less gambling of most any sort...otherwise online poker sites wouldn't have to set up shop in the Isle of Man to begin with, this isn't an internet issue.
- "Obscene" or violent porn, even if only acted - [citation needed]
- Ordering cheaper medical drugs from other countries - Import laws apply here, not necessarily internet related (the 'net only makes it a bit easier)
- Ordering pot or drugs - Laws against well predate a prevalent internet
- Sharing knowledge if it's copyrighted - Not directly the Government's will; most of that is civil litigation, though it might be enabled by poor legislation.
- Sharing entertainment if it's copyrighted - See above
- Revealing wrongdoing within US government (Wikileaks) - Might have a point here...certainly, there's some stuff that ends up in closets that shouldn't be, but let's also note that the DoJ hasn't directly done anything on this front, they're only probing as hard as they can.
- Posting knowledge of how to make bombs or certain other technical information - I can agree with letting this information be free, just go after the asshats who use it...
- Implementing your application or website in a certain way if it's software patented - Yes, patents are bullshit, but in a sane world, companies wouldn't try and patent a method for someone moving their finger across a glass surface for a distinct surface...i.e., companies don't have to patent the blatantly obvious.
- Anything else that hurts the business of Big Money Intangible Industries (Pharma, RIAA, MPAA, BSA) - Don't even really know what you're getting at here. You seem to be getting on a Copyright point, addressed above.
That said, the only things the US Government is really only actively cracking down on are alleged large scale piracy sites; and that only by domain seizure. Compare that to other locales where SWAT are engaged and seize equipment, the whole nine yards, talk to me then.