Looks well put together. A few comments:

1. I suggest adding they keyboard shortcuts/other instructions to http://madebycabin.com/work/linkhunter

2. I suggest making the "Linkhunter" item in the context menu opened by right-clicking link to http://madebycabin.com/work/linkhunter instead of http://madebycabin.com/

3. Ctrl+j (for me) opens Chrome's Downloads page. Since you use a capital "j" in describing the shortcuts, I tried ctrl+shift+j, but that opens the console in developer tools. How can I use the keyboard shortcuts?

4. Autocompletion of tags when adding a bookmark would be a very good feature to add (IMO).