I decided to create a montage today using the free version of the Photoshake app (not the one with the exclamation mark) so while I was in the mall I took all sorts of shots and choose 4 that I thought worked well together. After doing a random shake in Photoshake I took the result into iColorama and did all sorts of manipulations on it. Here is the result.
Here is another plain 'shake' with the same pictures which wasn't manipulated. I thought this looked good just on its own.