Bookmarks and annotations

Bookmarking a page is a lot like annotating a page and can be combined by combining metadata and filtering with different viewers:

bookmark annotate bookmark&annotate
goto a document goto a document go to a document
bookmark a document annotate a document bookmark&annotate
a document
select categories - select gategories
present annotation as an
icon on the page
present bookmark&annotation
as a bookmark icon on a page
present bookmark as a
link incategory hierarchy
- present bookmark as a
link in category hierarchy

Are AnnoSpam annotations annotations of type:bookmark or bookmarks under topic:spam or both?