Via Guested. The TLDR version is don't ask how to hack for tournaments and don't ask how to hack for Random Match. Read on for details
Apparently this announcement still needs to be up:
PROJECT POKEMON DOES NOT SUPPORT OR ENCOURAGE CHEATING FOR BLACK AND WHITE'S RANDOM WI-FI MATCHES OR OFFICIAL TOURNAMENTS
We do not support or condone cheating at the expense of others. While this community contains research, information, and utilities allowing people to create their own pkm files, we do not agree with using them in matches such as Random Matchup.
Using hacked pkm for private collections, in-game use, or battling with friends using the Union Room in local wireless or friends with whom you have exchanged Friend Codes (and are aware that your pkm are hacked) are acceptable uses.
Using hacked pokemon in official Nintendo tournaments is against the rules of the tournament. If you give us an explicit reason to believe that you are cheating or plan to cheat in a tournament, sponsored by Nintendo or otherwise, we will issue a ban.
In Black and White's Random Matchup feature, you are paired up with random opponents from around the world. Using hacked pokemon here is despicable because you are cheating against someone unknowingly and puts you at an unfair advantage, ESPECIALLY in Rating Mode where ratings are recorded and used to determine online leaderboards on the Global Battle Union portion of the Pokemon Global Link site. Mentioning hacking or cheating for Random Matchup will result in a thread deletion and an infraction for users who participate in the discussion.
My PokeCheck Stuff:
Stuff I got myself.
Togepi Breeding Project
Dream World/Global Link Pokes
Stuff from other peeps:
Level 1 RNG IV bred
RNG Wild Captures
RNG Dream World/Global Link
Cool PokeWalker Stuff
Box of Berries and Items
If you want any of these mons without the Classic "clone" Ribbon, just download the pkm file and use PokeGTS