Perhaps no compositional guideline is more strongly ingrained in the minds of photographers than the rule of thirds. And while it is certainly a useful heuristic, it is not the law, and it is overused quite a bit of the time. This great video discusses why the rule of thirds is overrated.
Coming to you from James Popsys, this excellent video discusses why the rule of thirds is overrated. No doubt, the rule of thirds is a very useful guideline for creating balanced compositions, but I know a lot of photographers who rely on it almost exclusively, at which point it actually becomes a detriment. There are many ways to compose any one photo, and relying on a single method every time without regard to the individual attributes of the image means you are often missing out on creative opportunities and the chance to emphasize your subject in more powerful ways or lead the viewer's eye on a more meaningful visual journey. Simply put: the rule of thirds is an excellent and efficient guideline a lot of the time, but do not become married to it. Check out the video above for the full rundown from Popsys.