Photo editing

I have quickly looked at FotoFlexer and Pixer.us but without trying them out and comparing their functionality to that of Picnic. It's just too much, I can hardly keep up with the wretched 23Things as it is.

No need to download Picasa 3.1, got that already on my computer.
Picase forever puzzles me, because I never quite know when I am sorting my photographs "virtually", and when I am creating new folders (i.e. actual subdirectories on my harddisk).