Still stewing and snarling over the inconvenience and waste of time caused by PhotoBucket's change-without-warning
from free service to pay (at insanely exorbitant cost) service. We've got our own Forum to maintain, so we had to make
a quick decision. Toyed with Imgur, ImageShack, Google, Facebook, and a few others, but went with Flickr.
Navigation there dreadfully non-intuitive, but works quite nicely once you figure it out.
If you're not in a rush to decide, here's a much longer list of possibilities for your photo hosting:
http://alternativeto.net/software/photobucket/