WTF is up with all these posts lately, between not griefing people and the 5 minute rule etc... I thought it was common sense on it all, even a cave man could understand.
Their are many reasons why someone doesn't have to respond to you while waiting for a spawn. Most the time I get tells in EQ I ignore them but am not AFK. If they are AFK anyways, then just wait and see if they engage the mob/boss after min mins of it spawning because honestly their is no way you can prove someone is AFK without using the 5min rule after the ph/boss spawns.