Clearspace 1.4 was released yesterday and includes two great new features. First up is a Popular Content section included in each space that highlights the most viewed and commented content at a glance. This feature helps people find the most useful content quickly when they are new to a space.
The second new feature shows a list of people with similar profiles on each user's profile page.
There were also a huge number of bug fixes. See the full changelog for the details.