The photo's posted are tied to the photohosting site you post from. Making them stickies has nothing to with whether they show or not.
There several reason pictures no longer show.
If you had a subscription photo hosting site and you let your subscription lapse, pictures will no longer show.
Some sites, especially free sites have bandwidth restrictions. Once you exceed your bandwidth your pictures won't show until you next allocated period.
Another reason the pictures might not show, the photo hosting site either folds. This has happened with several of the free sites and I have lost pictures on them.
The photo hosting site changes format. Photobucket changed format a couple of years ago and not all pictures could reformatted. I lost some there.
I'm not sure about the pictures you direct upload from your computer to the GBO. I believe those are stored with in the board software.
Everyone here on this forum has a free photohosting site at
www.myhostedpic.com courtesy of GBO. I have some pictures posted there. Here is my account Summary For DoubleD (LitePlan): Bandwidth Used: 72% (356.74mb of 500mb). Space Used: 7% (3.23mb of 50mb). Images Uploaded: 59 of unlimited. Because of the great number of pictures and videos I post I don't use this account much as my bandwith goes to fast.
I have a subscription site at
www.fototime.com that I have had since 2001. I pay $24 a year for that account. The account summary there is: Bandwidth Used: 85% (17Gb of 20 Gb). Space Used: 15% (616.56 MB of 4Gb). Images Uploaded: 3448 of unlimited. Because I am so heavily into the Fototime site, it's not cost effective to subscribe to extra storage space or greater bandwidth with Myhostedpics.com
If I were to let that subscription expire you will see the internet flicker. If I were to change photo accounts, in order to keep all those pictures alive I would have find each and every one of them where I posted them and repost new links to them. Good luck.
This review has been an eye opener for me. Those cute little video clips suck the band width. I also noticed one of my albums has an excessive amount of views for the pictures I have in there. I think this is because some one has copied one of my pictures and is using it. I may have loaned the link to someone to use. I'll have to research that.