As noted in earlier blogs I have been for some time an avid photography hobbyist. Having lugged a camera to functions, excursions and just because, I have managed to capture, probably as a result of more good fortune than talent I suspect, some fairly nice pictures.
For the tiny percentile who don't know what I'm talking about here, the rule of thirds is essentially all about composition. To put it simply the principle behind it is that a subject placed properly within a grid comprised of nine spaces will have more impact and aesthetic appeal than one centred in the frame.
To put it better, I shall leave the explaining to the experts:
DPS Rule of Thirds
photoinf.com Guidelines for Better Photo Composition
codrops Understand the Rule of Thirds
iMore.com The Rule of Thirds and your iPhone