I just do my achievement "give 5 comms" to get my reward so I just do it randomly. After i get that, I don't give comm to anyone, and I even don't get comm cuz I just leave the DF asap cuz I there are other things to do outside the game or just queue again to get to the next dungeon.

This is the only MMO that "forces" (referring to those players that ask for comms after the last boss or during the DF dungeon) me to give something to a random stranger. I explain things in dungeons when there are new ppl and/or asked for some tips ( I met very few people who thought I was a jerk/rude for ruining their experience with my tips so to respect that minority I ask or wait for people questions ) but never expect anyone to give me a comm for just being polite like I would have done outside the game.

If someone asks me for help such as where is this classroom/building or where is the student services, or where is the adm & record office in my college, then I just help them.