Just a quick plug for a new online start-up called SocratED. I came across it while conducting some unrelated research, and it's pretty darn cool if you're interested in developing online courses. Easy and free to use (nice clean GUI), SocratED let's you create online lessons - glorified online powerpoint presentations that can incorporate various online teaching elements such as video, websites, blog posts, you name it. Your lesson is hosted with its own unique URL.
While it's still early days (the venture appears to be only a couple months old) it's definitely an interesting development and should spark some creative ideas for online content developers and educators.