I'm near 1k now, all legit. Most of them from Tank and healer jobs, but happened sometime 3 commends even as dps in light party duty.

Tank and healer isn't free commends anyway, it happened bad duties and got 0 comm as reward.

Never begging for them, I will never commend someone who asks for. The only method I know for "fast" commends farming, is playing guildhests roulette.