Photo Hosting Services
@Shannara
(I wasn't intending to dismiss your suggestion, I'm sorry if it came off like that?) I never have used Imgur, but know people who did. One of which did lose their account, the other lost their uploads. It's probably just a risk, and I doubt they catch everyone. There had been a lot of discussion about it on a resource site I'm member of, so it came to mind. Seems like the reason is site traffic, and they aren't getting it when users link the images on other sites. They want direct linking to their pages.
Saving stuff (on back-up) is certainly the way to go, and as @BigBadRon said it's safest to self-host. All sites are fickle with updating TOS etc.. it gets crazy. :)
I know a lot of people just want something quick and easy for RP use, which is why I threw in a couple of site suggestions that work well (better than photobucket in any case xD).