We already have a native Chrome extension to do just this, and are working on other native solutions. We also offer a number of other ways to integrate it into other platforms using simply a URL. When logged in, we have a "Tools" page which lists some of the options for integrating Zapmarks into various platforms but are working to add more as we go!
Alternatively, I can see it being a "start page" sort of thing with support for efficient keyboard search, but again this doesn't strike me as something dramatically more useful than a static HTML page with Ctrl-F for search.
This basically solves a trivial problem in a somewhat overcomplicated way while creating a paid dependency on external service.