Colleagues are members of PRESENT Diabetes that you have agreed to share learning experiences with each other on the site. When either of you or your colleague watches a lecture or participates in an eTalk discussion on the site, the other is notified. Colleagues also see when each other are online, so they can send Instant Live Messages to one another. If you have used the Friends feature on Facebook, you'll see that we have adapted that concept to make sense on a professional education website.