Search Driven Applications with Office 365 / SharePoint Online Using the tagging feature in SharePoint 2010Blog Posts
Common stuff about Search Driven Applications and a solution proposal with Office 365 / SharePoint Online.
You can build Search Driven Applications in several different ways and based on different techniques. One of the easiest is using the Query Object Model from the SharePoint Search to create “Fixed Keyword Queries”. For example this query shows all SharePoint sites which you have access to: