I observe only here i have this problem! But from me side, is no any breaking rules if i post to any category, us long i write that is PS montage, if is about Nature, is belong there ..., Colage is also good, but only if have substantial idea or composition!
I don't believe putting to Colage will more beautiful or less interested!
The impact is the same, whatever is about.
I like to post where is best fit, whatever is!
So, please, for future, if you don't like my work where is added, just give negative vote and that all! Anyhow, i cand be the most loved one, i don't want that ether!

Cheers.