This is a massive compilation of cheats for the R4ds and its clones, i have tested most of these cheats with newer games and they work perfectly.

Even though it is a hefty download i suggest you try em out.

Where the cheats are gathered
Here is a list of sites where most of the cheated are gathered:

http://www.codejunkies.com

http://www.cmgsccc.com

http://www.gscentral.org/

http://www.kodewerx.net

http://www.thegshi.org

http://www.codemasters-project.net

http://www.arcentral.net

http://www.bsfree.org

http://nintendohack.c.la

Also because I love you all, I have created links that will always point to the latest versions of the cheat database:

http://cheats.gbatemp.net/latest/All.zip

http://cheats.gbatemp.net/latest/CHEAT.DAT.zip

http://cheats.gbatemp.net/latest/CHEAT.DB.zip

http://cheats.gbatemp.net/latest/CHEAT.XML.zip

http://cheats.gbatemp.net/latest/EDGEcheats.DAT.zip

http://cheats.gbatemp.net/latest/user.evoCHEATS.zip

http://cheats.gbatemp.net/latest/USRCHEAT.DAT.zip