"quiz creation service that I recently learned about on Danny Nicholson's blog. Using Blubbr you can create interactive quizzes that are based on YouTube clips. Your quizzes can be about anything of your choosing. The structure of the quizzes has a viewer watch a short clip then answer a multiple choice question about the clip. Viewers know right away if they chose the correct answer or not."

cloud-based and collaborative

"HippoCampus is a project of the Monterey Institute for Technology and Education (MITE). The goal of HippoCampus is to provide high-quality, multimedia content on general education subjects to high school and college students free of charge. HippoCampus was designed as part of Open Education Resources (OER), a worldwide effort to improve access to quality education for everyone. HippoCampus content has been developed by some of the finest colleges and universities in the world…"

According to the website, it is currently in beta for a limited time. You can use all the features in the product for the time being. After the beta period, they will decide if some free functions will possibly be restricted in its use. So do be prepared for the site to change in the future. Keep an eye on the site for more information. Read more http://www.whiteboardblog.co.uk/2012/12/make-word-clouds-with-typoeffects/