UPDATE: Barnes & Noble is blameless. See this post about how the IDPF screwed up everything for everybody!
I heard this first from Judie Lipsett of Gear Diary.
I sent her a commercial-grade ePub to test on her Nook. I also sent her a Calibre-made ePub that was a PDB format-shift of an eBook she owned to investigate preserving her eReader eBook investment.
In both cases, the wee color LCD screen would not display a thumbnail of the eBook covers! From her email:
ok – unless you purchase it at B&N, you will never see the pretty cover art at the bottom of the screen.
This is not a minor issue, either. Over the weekend rumors popped up on Twitter about Barnes & Noble moving from their current PDB-formatted eBooks to ePub.
If the covers of the ePub eBooks can’t be shown on that shiny color LCD, that’d be another strike against Barnes & Noble in its rush to get the Nook out for this holiday season.
Further update: The least Barnes & Noble should try to do is to get the Nook software to find something called COVER.JPG so there would be a possibility of a proper thumbnail being generated. Again, see this post about how the IDPF screwed-up.