well it depends, i don’t have a preference :)
it depends on the scene, i think by looking at the pics i’ve taken so far i can say that most of the time i’ve used to give 1/3 of space for the sky, and 2/3 for everything else….
but if you look the howth pier pic with the child and the dog i’ve done exactly the opposite
i find the square format more interesting by the way, maybe it is just because i’ve started to use it recently and i didnt get sick of it, yet :)