There was one brief discussion about putting pictures on photobucket et al, not an official statement!
I'm a regular poster on 4 different boards, and aside of one (that offers direct image uploading for the posters) they all advise to use photobucket or a private web space! So that's what I'm used to do and what I do.
1) Mailing the pictures to a Mod is about the same amount of work as posting them myself.
2) If I post them directly, they show up immediately
3) If I post them directly, you don't have to do anything but look at them.
4) So what???