Comment on Photon

The stack interface is very interesting, nice concept and well implemented, but I am missing something... What can I do with a stack? i don't see anything, the interface is not straightforward there...

And, well, on a macbook dual core duo2, it's not fast at all, every time I do something (send a photo to a stack, move between stacks, etc. etc., I get 1s of beach ball... umpf.