No commendations

[Maero]

Well as of late (especially Dun Scaith and Weeping City) healers always seem to die, or not even heal so not many comms being sent their way.
Comes down to performance, that is who gets my vote

[HyoMinPark]

In my experience, I seem to get more comms when I'm playing AST compared to BRD (since people tend to comm tanks or healers, and just ignore us DPS v.v). I usually don't care too much about commendations; the only time I get salty is when I am consistently having to raise party members (this is usually in my Dun Scaith runs), where I'm literally the only party member not dying, where I'm sharing Balances among DPS if I'm holding a Balance already, and don't draw a Spire/Ewer to spread it but instead a second Balance, and basically just being a god (no, I am not trying to sound or be arrogant here), and walk away with one or no comms. That's the only time I get mad about commendations, but usually that anger only lasts for about five minutes.

I comm for different reasons, and I tend to comm other DPS if I notice that they are doing more than just hitting 1-2-3.

If I see a BRD playing me Foe's while I'm DPSing on AST, they automatically get my comm. Same if I see them pop MP song for myself if I'm running low, or TP song for some of the TP-starved melee without anyone having to ask for MP/TP. Plus, I'm partial to BRD anyways since it's my main, and if I see a good BRD, they're more deserving of my comm than a tank or healer, who usually just get brownie points for showing up, imo.

If the DPS suck, I'll comm the tank if they did a decent job holding aggro, and if they knew what cooldowns were and how to properly use them. Bonus points if they're a DRK that consistently keep up BOTH Grit and Darkside during the majority of pulls.

If I'm running 8-man or 24-man content, and I have an amazing co-healer, I usually comm them, especially if they are another AST, and coordinate card usage and sects with me.

If the entire group was just subpar, I don't comm anyone. If I feel like throwing them a pity bone, I'll comm whoever died the least.

However, sometimes I comm people that others would think probably don't deserve comms. If I am running something with a sprout, and I can tell that they are trying really hard to do well, even if they die a lot or don't have the best DPS or rotation, I still comm them because at least they are trying. Bonus points if they're given advice from another party member, and take said advice to heart.

Sometimes I comm a person who I think is funny, or who makes the run less boring. Sometimes I comm someone if they use a funny macro. And sometimes I comm on things like character name or glamour.

Commendations are more or less subjective, so I don't hold them to much value usually. If your lack of comms seems to be a consistent and pervasive thing, however, I would take a few moments to look back on your individual performance in duties, and see if there is anything you think you can do to improve. Just keep in mind that there are those that just don't comm at all, or only comm 5 times a week to get the Challenge Log entry.

Side note for myself (and this goes for some people I know as well): I don't care how well a player is doing, or how god-like they are, the minute they post some "Thank you for the party! If you liked me, give me your commendation! I almost have XXXX comms!" macro, they automatically lose my comm. Commendation begging just annoys me more than someone outright sucking at their role.

[Valmaxian]

I think healers get TONS of commendations - its DPS classes I feel bad for. Aside from seeing who's highest on the aggro table, their contribution is more subtle than constantly fluctuating health bars and flashy buffs/healer AoEs. I have a lot of comms, and I play 270/270 AST/SMN about equally. I'd say 80% or more are from healing (I swear I don't suck at SMN! XD). When I give out comms, I always try to consider the DPS first.

[Gemina]

I typically get at least one per instance, so no issues on my end. However, it does irk me when I know I kicked ass and don't get anything while getting multiple comms when I derp like crazy.

[bardaboo]

I get 2 comms in expert dungeon all the time as bard.

[Tizzy_Tormentor]

I give comms to the players that left the best impression on me, I don't give one to a player just for playing their class, its really pompous to expect comms just for healing.

Don't expect them, they are a nice bonus for a job well done, expecting them is kind of a bad attitude to have. I mean if every performs well, players still have only one comm to hand out. Yeah getting no comms for turning a run around or carrying everyone else is annoying, but at the end of the day, there isn't much you can do about it.

[RopeDrink]

Expecting commendations, even when doing a good job, will just eat away at your sanity. I've had the dungeon-of-my-life many time as Healer or Tank (and I'm not slouch on DPS-Healing, or doing what it takes to make runs silky smooth as tank), and sure, sometimes you click 'exit' and not a single commendation appears (and I'd be lying if I said it didn't feel bad sometimes), but having said that, it's just one of many systems out there where it'll boil down more to player choice than it will certain standards.

I see many great posts on the forums but I rarely feel inclined to use the Thumbs Up, for example, just like you'll reach a point in FFXIV where most people just want to get X done and get out to re-queue ASAP [commending people is wasting a precious second of lifetime]. Still, I usually commend people, sometimes because I've noticed someone being awesome, other times because I get a fistful of gil for the weekly commendation requirement - and never if I feel everyone was bad. I'd be hypocritical if I expected people to do more than that for me no matter how good I play(ed).

[technole]

I think the general guideline I have is "this player can definitely raid in this game, or probably already does well and it shows". Or exceptional circumstances. There are times I don't even a comm at-all. Like the in-prog Bailsar's Wall at the last boss I got as PLD, the Astro didn't DPS at-all, cards were a mystery, the two SMNs were horrible at damage. I was in Sword Oath the whole fight just to get through it, it was painful. That is a no comm situation.

I've been giving more nods to DPS lately, as I queue more as DPS, and that's just because I've ran into these kind of players that fit that description. Whereas the tanks or healers can be seen as just forgettable. I know that may sound a bit harsh you probably know what I mean when you see an Astro that just holds cards forever, the tank that can't mitigate worth their life, losing aggro, or playing the stance dance game but isn't good at it, yada yada.

[Nicodemus_Mercy]

The only time I get upset at no comms is when its a run where there are new people, I explain all the mechanics so they dont go in blind, I perform admirably both dpsing and keeping everyone healthy, I banter socially during the run, offer positive reinforcement when newbies do well on new fights, only to find at the end of the run not one of them thought to give me a comm. It doesn't happen often... but when it does, I really notice.

[Chevronone]

I usually see an influx of comms on reset and shortly after. Many people just do their 5 comms for challange log and don't click that notification until next reset.

99.9% of the time, if my healer is dpsing (in cleric stance), they will get my comm. If i see a tank stance dancing is a runner up. Or if somebody just endsup makong me laugh (bard ripping hate and dying and has something whitty to say). It all really depends.

But the person who doesn't say anything or do anything beyond "pew pew or make HP go up" and waits to be the last one out hoping for default comm...lol no.