I hadn't thought about using screws through pots before. I had just used nylon string to hang a few pots I had. But the idea was too good not to try - albeit in my own super-cheap not-so-cutesy way.
I did use 2 screws instead of just 1 because my faith in a single screw holding up a gallon of wet dirt isn't too great.
I think it doesn't look too bad - surely it'll be great with little plants growing in it, or maybe cascading over the edges.
I decided to add more pots after I stood back and looked and pondered.
I'm looking forward to growing some good things in this new area I started making today. Hopefully this gives someone else some ideas, too, like the other blogger's idea helped me think of screwing pots on to these ugly posts.