Very good point.
Maybe not call it "bookmarks" but something more fitting like "library" (well, I'm not a native english speaker so it's hard for me to find the right name for the baby which fits into the monastery scheme). And have that a section on your home node. Maybe one should be able to decide whether his/her library should be available to the public.
That's another thing I was thinking - a "show on my homenode" option. Most people's homenodes are basically just a shedload of links to useful nodes anyway...