I'm a "soft-hacker", i like to hack cause it make fun, but I always try not to be unfair to much.
OPK or Invi for example are one of the unfair features and I dont like it to see public hacks with OPK cause there will be 3 OPK hacker in every room then - this is very unkewl!
So it would be ok when you make hacks, but dont do the hard-core things...