Pearlshipping is my second favorite, but I despise Advanceshipping.
Negaishipping is too new to judge.
I don't use "uber" Pokemon (because they're banned), I don't calculate stat values (the simulator does it for me), I don't use cheating devices (because I hardly ever play the actual game), I don't breed my way to perfection (because I use a simulator), and I do care about natures. I battle the most efficient way, so I can use my strategic skills to the fullest. I don't look down on others because of the way they play Pokemon, which non-competitive people seem to actually do more often. If you use this philosophy, copy & paste this into your signature. (Started by DittoDude.)