I noticed a few months back that Google™ has now, more-or-less "officially" stopped developing Google Bookmarks, by encouraging users to use the newer Google Notebook instead. (Log in to your Google Bookmarks and you'll see the promo for Google Notebook.) Unlike Google Bookmarks, Google Notebook does have an interface which I could use to easily read or download Google Notebook. Thanks, Google! Unfortunately, you've not yet provided an interface for an application like ours to write or upload items ("notes" = "bookmarks") to Google Notebook.
When and if Google does this, I'll look at adding support for Google Notebook to Bookmarksman (Bookdog's successor). In the meantime, the fact that they've stopped working on Google Bookmarks means that interface which I engineered for Google Bookmarks without their help is probably going to be stable for a long time. That's nice! I've got plenty of other features to get back to work on in the meantime.