Originally Posted by nickdalzell
are you connected to data services (2g/3g/edge/etc?) or internet (wifi) when using it?
Suspicion confirmed..... it was me.
Having said that, I am unable to invoke manual bookmarking in my version (18.104.22.168).
Long tap brings up a "Search | Wikipedia | Web" dialog along with the built-in dictionary's definition of the word under the tap.
Tapping "Menu" while reading a page of the book in question offers up only "Home", "Top Stories", "Articles", "View Options", "Don't Keep", and "Search".
"Menu" offers different options on the Home screen but, of course, bookmarking becomes moot once the user has left the book being read.
Edit 2012 11-27 09:42:
"Note: Bookmarks and other annotations are not available for periodicals.
Somebody's gotta be kidding.....