Alternative title: "Make Bookmarks Easier to Use"
Mostly my suggestion is to add the "Bookmarks" link next to, or even in place of, the "My posts" link at the top of the page.
An added suggestion would be to move the actual "Subscribe" and "Bookmark topic" links further up the page, instead of nestled in with a bunch of information we only look at occasionally. A lot of other sites I've been on will add this feature at the top right above the first post.
I don't know about others but I find the current setup for bookmarks unintuitive, so even though I want to use the feature I keep forgetting it even exists. Either one of these changes would help a lot.