A guildmate mentioned this to me while putting together a party...
Change the lfm so that it blocks certain character levels from joining. Like when you post for levels 5-7 and a level 9 tries to join, and just as you add her, you realize she is too high of a level.
My friend made an offhand comment about people not knowing how to read. But I think these people are trying to take advantange of newbies and those who don't pay attention.
Anyway, this should be fixed.