The first dungeon I went into after resubbing to the game in December last year, the people in my group were saying that the DPS should commend each other, and the healer and tank should do the same so that everyone would get one.
That's the only thing close to "begging" I've encountered so far.

I usually only give commendations to those I feel did their best.
Whenever I don't feel that anyone deserves a commendation, but receive multiple myself, I feel bad once I've left the dungeon. D: