Most repositories are organised according to collections, often called communities. These are groups that contribute content to an institutional repository – academic or administrative departments, colleges, centers, units, labs, etc. Many institutions begin with a pilot programme for their repository services, showcasing a few early adopter communities. This enables repository staff to focus on seeding the repository with content, testing the software, and ironing out procedures and policies. Early adopter communities are also very important for demonstrating the repository to other protential communities.