How do you decide commendations?

[Herrored]

If someone did something noticeably good, obviously they get the commendation regardless of class. Similarly, if someone was friendly & fun during the duty then I'll give it to them regardless of class.

When I'm DRG I tend to give it to other dps because I know the commendations come less often for dps.
When I heal, it's usually the tank, especially if they're efficient in pulling and can take a hit while I lay down some dots.
When I tank, it's usually the healer, or possibly the melee dps if I see them doing their job well.

All of those are subject to people being excluded for screwing up.

Also, as a side note, sometimes I wish we could give out "condemnations" or the like for when someone really pisses me off.

[VanilleFang]

I give my comm to whomever I feel deserved it the most. This may seem obvious but it just seems that everyone just gives it to the tank if they are the healer, the healer if they are the tank, or the other DPS. I heal 99% of the time but that doesn't mean I'll be giving my comm to the tank. I think it's easy to see if your DPS' are actually doing their job properly and to be able to determine who is doing the better job. But it mostly comes down who I find the most enjoyable to play with. I actually find that the more I play the less likely I have been to give it to the tank.