And most people will tell you that it's harder to make square photographs exciting. People prefer wider pictures to taller pictures. But I've been seeing a lot of beautiful square pictures recently and it's something I really want to start experimenting with. So consider this step one.
A note about this photo: I took it one evening in Yerba Buena park in San Francisco, while I was explaining a few photography concepts to a friend. I mostly just took this to show him the effect a long shutter speed has on moving water - makes it turn to silk - but then I got all into the composition and stuff, and ended up with a photo that I really like. Is that instant karma or what?