User:Mark Miller/Project collaboration
| WikiProject | Subject and portal | Description | Major project contributions | Main articles |
| WP:ROME | Ancient Rome | City, monarchy, republic and empire | Expanded scope. Uploaded images, including Platner Forum map and Google 3D rendered buildings | Roman forum, Rostra |
| WP:WPMERGE | Wikipedia process help page | Help reducing and maintaining the merg process and backlog | Helped create project guidelines, project page, templates, barnstar etc. | Wikipedia:WikiProject Merge/Assessment |
| WP:OWS | Social phenomenon |
