I have heard all of these as well, did badges the other day however and just used my hands...PITA, but it worked. If you pull back on the tape at 45 degree angle slowly it comes off in decent chunks (back and away). pulling forward on it like regular tape just rips it. go slow and it works though. have a beer handy.
once off the little film that is left comes of with warm soapy water and scrubbing with a towel, keep it wet through out and it helps. my paint looks fine and will likely be great once I wax it....never enough time to wax