In this paper we describe the
“ColourRoom” software, a web-based platform to support virtual
communities of educators. This software has been deployed to
three distinct communities – educators using BlueJ, educators
using Greenfoot, and UK computer science school teachers
(regardless of software) – which affords a rare opportunity to
analyse the usage of the same software in different communities,
providing insights into both the communities and the design of
software to support them