Hi,Well, I noticed that too. My guess is that maybe the person who add the cover is no longer a shelfari member, so the data desappears, but, it's only a supposition...
Actually, this is an ongoing issue that Shelfari is aware of. Their team of engineers is said to be looking into it. It has been reported and addressed in multiple other discussions, but as of yet, we have had no update on a fix.
It's just a glitch within the system, and the covers will sporadically come and go.
Yes, don't waste keystrokes adding the same cover again -- the covers that disappear do come back later.
How much later, on the average? Just want to know what to expect.
I've noticed this too. The picture is broken or back to the annoying generic book cover.
Someone told me that I didn't have to fix them - that they'd fix themselves eventually. I'm keeping my eye on a particular one that this happened to, but it hadn't self-corrected last time I checked. I'm giving it a little more time - fixing the things manually is too time-consuming if they will, in fact, fix themselves.
I've had them correct themselves only to see a different book cover disappear.