it is nothing personal against you, in fact it is more a compliment (becuase I thought you worth while noting to come back to) becuase if you look at the critiques I have posted during the previous day, you will see that I have left a lot of them yesterday and I had run out. The time the get reset is part way through my morning. You can only give 20 critiques with 'points' in any 24hrs period... in the UK it seems to be reset at around 8:30am-9am.... after that the I have to go back and add the smiley back in the following day, but if I don't leave some comment, I can miss the photo althogether or totally forget... so it is better to leave a critique and edit it later for the smiley... The moderators have been clamping down on people saying that they will leave a smiley later for various reasons... so it just has to go unsaid...
It is very much a participation site... I too have been missing from it quite a bit becuase of work, but if you can leave critiques each day (even only 2 or 3) it helps to keep your name there... I have had to drop to about 1 picture a week since the beginning of the year, but the next 3 weeks or so will be better for me becuase I have more time in the mornings...