As an e-learning professional, I've been looking for a medium with which to provide testing that is easily accessible both for me as an educator and for my students. Though I only signed up as a free user with BrainCert, I was impressed with the complexity of the tests I could create. Pretty much whatever I wanted to modify I could, and I can even sell the tests if I like.
The reason I may consider a premium account is that then I'd have access to full-hour long classes using the virtual classroom instead of using webchat services like Skype or Google video chat. For companies in the e-learning industry like my own, I see a lot of value in BrainCert. I'm excited to get hands-on with the other features as I expand my operations because the usability has been so good thus far.