I don't commend anyone anymore.

I say hello at the start.
Ask what size of pulls they want and pull as such.
Never lose hate.
Hold mobs as still as I can for melee dps while still dodging AoE's to keep damage taken down.
Use my cooldowns to keep damage low for healers.
Keep the run moving without rushing anyone.
Stance dance on bosses when I have an opening to max my dps.
Thank the party at the end before leaving.

Receive 0 comm's every single time.

I've asked a few parties to give me feedback at the end and been told "I did fine" and "there really wasn't anything they can think of I can do to improve" every time. So as far as I can tell the only reason I'm not getting comm's is cause I'm a tank and people hate tanks "just cause". That being the case: No comm's for anyone from me.