Ugly watermarks, no bookmarks, locked PDF (so I can't add the bookmarks myself). This is customer-hostile behaviour.
With a huge PDF made of images of blurry text, as far as I'm concerned this doesn't deserve more than one star regardless of the content.
Also, no bookmarks. Of course.
The graphical presentation is so bad it's almost unreadable: think 90's bad web sites, with ugly fonts over colourful space photographs. The content is, well almost nothing, actually.