ta Rayder. Is the usrcheat.dat in your sig the most updated?
Actually, it's an encrypted cheat.dat now and not a usrcheat.dat anymore, but yeah, the one in my sig is ALWAYS the latest one. It focuses mostly on (U) and (E) games, but many of the more popular (J) games are in there too. It currently weighs in at 2.08megs. It has nearly 500 games in it. 492 by my quick-count, which includes region dupes or alternate GameID's.
It's core is based off of the latest official R4 cheat.dat, but it has been constantly added to by GBAtemp members and myself for a few months now. I'd say it's about 85% (rough estimate) of all DS games that have AR codes. This dat is provided exclusively to GBAtemp.net and its members. I don't announce it anywhere else.
It gets updated nearly everyday. Feel free to use it however you like, but please don't post links to it anywhere else.....the link name changes every time I update it, which would render any link you might post useless real quick. If you want to tell people about it, point them to GBAtemp.net and this thread.