I always have a bunch of images in a file that are ready to post.  My criteria for putting an image IN that file to begin with is the most important decision.  What I post today, or if I post at all, is merely a function of how much time I have and what I feel like putting up. 

I try to mix up the subject matter a little bit.  If I've posted three shots in a row from my Chicago trip, I'll put up a flower or something just so people don't start throwing things!  LOL! 

Sometimes I'll look at my gallery and think, "gosh, this is all the same color, and I need some red on the page."  Up goes a red flower!  (I happen to know I'm not the only one who does this ... Andrea does it for sure, and I've heard other people mention it as a decision-making tool.)

I wish my selection process was more profound, but really ... I just put up what pleases me! 

As far as what makes it into the "ready to post" file to begin with, it's just what I like.  Sometimes I'll postwork an image and work on it for an hour, and then not use it.  It didn't grab me, it's boring, I can't figure out what I want to say ... whatever.  When an image gets to the point where I can't think of anything else that would improve it, and I like the result, off it goes to the "to be posted" file.  Once it's in there I rarely change my mind.  I think in three years I've moved 20 shots OUT of that file.

I don't delete old images ... my gallery is a record of my progress.

This was a great idea!  It's fun to see how other people approach posting.

"If your pictures aren't good enough, you're not close enough."  ...  Robert Capa