What is a themed cluster? Every entry, whether it is featured inside a cluster or free-standing, is tagged with multiple keywords. Every keyword forms a themed cluster. So, for example, all entries tagged with ‘care’ form a themed cluster on care. This allows the visitor to examine different contributions relating to care, making visible connections across geographies and topics that may not have otherwise been obvious. Themed clusters are thus broader in scope than clusters and emerge organically as contributions to the project grow.