Imagebox seems like a good choice. It's weird being that they and Imagebam seem to be sister sites, but the latter has been incredibly slow at times lately. Seems like there's been more pop ups with Bam as well recently.
Fotki is a little more organized and you have some good album customization options, but you only get limited storage with a free account. A fair amount, I believe, though I forget how much.
Imagevenue isn't bad, though you have to deal with the occasional pop up, and they add all these useless characters to the beginning and the end of the original file name (okay, that last one is just a personal issue for me

).
Whatever option you choose, we'll be looking forward to the classics.
