It pains me to side with Jayle, but I must :) It does seem this is happening a lot more. I have had 2 low levels the past few days send me group invites without even asking. Ticked me off to say the least.
I have always been willing to help out players even lower levels, I usually stick with helping guild members though.
Just makes me wonder where all this is coming from.Is it really new players to the game, or could it be some veteran players starting new characters just to irritate others. Hard to know for sure.