Only web sites referenced in the unity-webapps-* packages and which are
installed on the system can appear in a Dash search. There is no online
scope support.
** Changed in: unity-firefox-extension
Status: Fix Committed => Fix Released
** Changed in: unity-firefox-extension (Ubuntu)
It seems to work for packages which are available in Ubuntu Software
Center (I've tried with Launchpad), but it does not work with Web sites
which directly implement Unity Webapps integration.
The probem can also be reproduced with the official Quickstart :
http://developer.ubuntu.com/api/devel/ub