I don\'t think bandwith would be much of an issue with a couple client side flags to check against.  Obviously this would only be in effect when an NPC is selected, but there should also be a cap on the number of words or there could be the equivalent of a DOS effect with a rediculously long string being passed, this brings up my concearn though, how much server side processor will this take?  The best way to cut down on that would be to array a different set of values for each npc, since they would be relatively tiny arrays I don\'t think it would take up to much resident and would cut down on processor consumption since you could eliminate large chunks of data with a simple comperison, plus it wouldent have to rededicate any memory since multiple client requests to the server could pull from the same array.