Woah, I suppose they have some built in scripting to block sharing once too many links are made through third party sharing, but... Wtf would anyone use photo bucket for otherwise..??
I started looking into it. Photobucket now charging $400USD a year for the option to share pictures/gifs on 3rd party sites. Until you pay any gif/picture you've ever hosted from photobucket will be replaced with an "Please update your account" message.
Ah. Yeah... I have my own domain but don't really want to use it for shoops. This is a recent thing with photo bucket.
It's murdered a lot of good threads... I use my own media page on sherdog for my shoops... Click media, then add media, then create an album and you're good to go.