do you feel your writing or posting quality suffers later at night

yes, definitely. when i'm quite interested in a topic, i sometimes make a very lengthy post when there simply is a lot of things to write about. but when i'm tired, even if the mind is willing but my typing fingers are no longer coordinating and cooperating with me... hehe... i'm bound to have shorter and shorter responses. i usually enjoy several exchange of comments too in a thread, just like a conversation should be. but when i'm tired, i noticed that i make one-liner comments which isn't exactly the usual me. hehe when i'm in the mood with some of my mylot friends, we make long threads that would run for days exchanging a few comments a day. these days i don't start discussions, i just respond to a few (often from those started by friends in my list) and i shy away from highly debatable topics. i usually come to mylot to relax, not be further stressed out. hehe so i guess when i'm really too tired, i will not post at all. because i just might fall asleep in the middle of a post. which was quite true as it already did happen a few times.

I can get tired at any time of day, so no, I don't think so. Responding to discussions isn't like researching and writing an article so it generally doesn't require that much brain power.

I'm more likely to avoid posting if I'm feeling depressed or even just blasé. If I'm tired, I'm probably not here.

I can probably make a better post to a discussion or start a better discussion if I'm not tired. So probably early morning would be best for me, but since I don't ever have mornings that I can, I do the best that I can in the evening. So the quality of my response may not be as quality as say if I would respond later in the evening.

Well if I am tired the quality of my posts will suffer regardless of whether it is night or day. I find that the surroundings are more calmer at night with very little distractions which helps me write better. I am inclined to be a night owl and that might be the reason. I generally prefer online discussions when I am not caught up with other work which mostly happens during the day. And yes, I would avoid posting if I am tired.

In many ways, as the day goes into the later night time hours, I do think this is true. The reason for this is because I most likely had responded on many topics throughout the day. Therefore, all of my creative ability has been exercised completely. Thankfully a lot of the times by I reached that point, I think I have posted a sufficient amount of responses for the day to reach my goal. Likely that's my brain sending my a signal that I have done more than enough. If there are interesting topics, they will still be there in the morning after all. Maybe after a night's rest, I'll be able to properly contribute to them. So, yes, indeed, I think my ability to write kind of drops off at night for obvious reasons.