As an Administrator and Manager:
To author content, you should have experience creating PowerPoint presentations or use tools like Movie Maker, iMovie, etc. Ability to record video using a simple camera, video upload, and video editing capabilities are certainly a plus.
As a Moderator:
Skills as stated for viewers also with the ability to decipher and manage abusive or unrelated media uploaded by user-generated content (USG).
As a Contributor:
As a contributor, one should have the ability to create and/or share the right content with the right audience by uploading it in the portal.
As a Viewer:
Basic computer skills such as the ability to launch a browser and log in to the portal are required.