spellbook VS firefox-easy-container-shortcuts

The article fails to mention existence of graph databases, or graph theory, except for tuple spaces which leads to that direction.

With graph databases you can easily and efficiently model any kind of network, including ones that are hierarchical or almost hierarchical by allowing a node to refer to multiple parent nodes instead of one.

My original idea with my bookmark extension Spellbook was this latter kind of graph, and I implemented a prototype called Grimoire using Ruby on Rails and Neo4j graph database, that worked very well.

The Spellbook currently only allows adding new bookmarks into the hierarchical structure imposed by browser APIs, but features an easy to use search feature to find the right category. Spellbook is available for Chrome and Firefox, but the Firefox version seems broken again by their API changes: https://github.com/peterhil/spellbook

Browser extensions are useful. I've made some simple ones and published a few:

https://addons.mozilla.org/en-US/firefox/user/14310707/

But it's also worth considering where the browser gives priority. For example, while browser extensions can add custom keyboard shortcuts, they can't override the keybindings a website uses. Want to use the keyboard shortcut Ctrl-Shift-1 for a browser extension while a Google Docs page is focused? Nope, sorry, can't be done.

https://github.com/gsomoza/firefox-easy-container-shortcuts/...

It's pretty clear that while a browser extension can access browser APIs that a web app can't, the extension is still a second-class citizen in other respects.