Often (mostly) I really enjoy the photos posted in the CC forums, however, often (mostly) I'm not sure what to say to the OP.
"I really enjoyed that series of photos" hardly seems like CC. Yeh, "I really like that photo because ......" is what some will tell me. But what if I really enjoyed that photo and I'm not sure why. Or maybe I really enjoyed that photo because it was just bloody good and the OP probably already knows why (hello Dylan, Richard and others).
Now if I have something constructive to offer or if there is an obvious (to me) reason that I find a photo enjoyable, then comment is made.
In other cases, do people think it acceptable to simply click on "Thank you for this useful post" so that the OP knows that at least some enjoyed their photo? Is this better than no comment at all? Should people do this more often?