I was boosting an alt with my warlock in SM when I had a tell of the type 'can I join' but worded very nicely and politely, bear in mind that this was dual boxing for me if you can call it that. I agreed, and then made a friend for life that would bug me all the time for boosts for the character he originally sent me a tell from, and also several alts, including for twinks. This kinda annoyed me, and was another reason to motivate me to box 5 chars.

I should mention that with him in my group my speed and progress through instances was halved, and I wiped in places I would never have due to unwanted aggro WHEN you are going out of your way to help them! Seems like the only things that motivate people that I meet are lootwhoring, greed and self promotion, not qualities I admire in what should be a social game.