Elsevier…
Took OpenSocial API and extended it – specifically so it could access some context from the web page you are viewing at the time
Applied extended OpenSocial to ScienceDirect – so can build gadgets that can be displayed next to articles etc.
SciVerse – http://www.hub.sciverse.com

Now have open market place for gadgets at http://www.applications.sciverse.com/ – open to all – need to register and then can develop – to develop need to know:
        javascript
        json
        html

Examples include:
        Integration of library catalogue data that matches keyword search next to article

[Presumably could integrate an OpenURL resolver?]