Someone in my FC said earlier that tanks and healers always exchange commendations, and I have to admit, I normally give it to the tank. But let me explain....
I have no idea of telling which dps did better in 4 or 8 man content. And I never want to just randomly select a dps because I'm supposed to be thanking someone for a job well done.
Whereas, a tank in 4 man and the main tank in 8 man content, I can always see how well they do. And that's why they normally get awarded with it from me.
How do you guys decide who to give your commendation to?