I'm not that hard on the Gorean meter folks. There really isn't much that they can do that they aren't already doing (especially when you consider that they are doing all of this for free). There are a couple ways to detect and prevent copybotted weapons and creator spoofing. The big bow makers have systems in place to authenticate their arrow shots already (AC was an early pioneer of this feature). GM and pretty much any SL combat meter largely relies on in-sim comms because SL throttles http messages, you can't talk back and fourth to a web server fast enough to have a real time battle between multiple combatants, not unless you slowed down weapon speeds to the point of boredom. Lots of systems do include database features as a supplement to in-sim combat messages but you'll find that these are usually "special moves" with long cooldown timers. Most systems use prim collision, control combat comms entirely within the meter, or use closed source scripts in their weapons (like the way GM shields work). Gor is fairly unique in allowing a third party to script their own weapon functionality. To have secure communication between objects in a sim you have to use encryption which is crackable and laggy, it isn't practical to have many parties sending encrypted messages at a very fast rate, that is why we're forced to deal with trolls fucking with meter comms, we don't have enough script time to secure our messages.
Systems are possible in which a copied weapon wouldn't be able to respond properly to an authentication query. If I were in the weapons market I'd give sim moderators devices that can be used to prove if my weapons were the real thing or a copy. You could use an md5 message that is salted with the current time and a password that is only known to the weapon maker, crackable with some effort but doubtful that anyone would bother. If any of you vendors out there create such a thing, I'll be fair about my royalties
. I guess we could mandate that all the weapon vendors include authenticators with their weapons, then your main cheating risk would be secret features made by the vendors themselves (which have been known to exist in the past).
If you couldn't trust the weapon vendors, then the other way is to build the weapon scripts within the meter itself and handle all the combat internally, leaving the weapons that vendors sell to be nothing more than glorified animation overrides. It would be drastic and effective, but it would kill the market and the vendors would refuse to support it. Being that many sims are owned or heavily sponsored by weapon vendors, I highly doubt that such a combat meter could ever catch on. I already made a meter like this, well just the melee part so far.
Even then, people would still be able to use macros to enhance their reflexes and the more determined among them could modify the viewer themselves. Proper FPS games use demo recording and computer invasive anti-cheat software to combat this problem and there is no way Gorean sims could install those kinds of precautions on their visitors. At the end of the day you just have to trust that people will act like adults and play nice and not to take things so seriously if you lose. Sure, they could be cheating but there is only so much that can be done before it just isn't worth the effort. Eventually one realizes he could make accomplish lot more for himself by exerting this kind of effort on anything else but video games.
Or, you could be cynical and conclude that because others are cheating with little hope of being caught, you may as well cheat too. Personally, I've retired from combat in SL.