I wrote a little DOI resolver that makes links to DOIs point to dx.doi.org. It’s just a single regex replace. It recognizes DOIs and adds a
<a href="http://dx.doi.org/DOI"> around it. It’s basically discourse-pirate-speak.
For those who don’t care about academic publishing, DOIs are unique identifiers for articles.
My next step for this extension is to add customizable regexps.