Experiments with long exposure

It's important (to me, anyway) to note that most of the learning I've done about photography has been a result of an informal photo challenge that I regularly participate in on an online forum that doesn't have anything at all to do with photography. It has really encouraged me to stretch my creative muscles and learn about my camera and what I can produce with it.

So, this last week's photo challenge topic was "long exposure." The following photos are the ones I came up with in playing with the idea.