Author here - I've been working on this add-on for some time. SciZone allows you to paste little 'snippets' (urls) onto web pages. Any user who has the add-on can hover over the link and see the data.

For instance, if you have the add-on, you'd be able to hover over this link: sci.zone/#9LeYO and see the weekly number of nuclear arms the US and Russia have had over the years since the Cold War. If I wanted to pop in a definition of the Dunning-Kruger Effect, I can: sci.zone/#LNcSk. (There may be an issue with Hacker News changing up my links)

It is my hope that SciZone will help make discussions on the web even more informed and backed-up with hard data. In some sense, it acts as a citation; except now the citation is interactive!

The project has a long way to go and I could use all the feedback I can get. Just be constructive. Thanks.