Making Sense of Online Learning Formats - MOOCs, Videos, Web Tutorials, and More

The idea for Ed Republic started when I became super frustrated trying to find mobile app classes online. I quickly realized there are an overwhelming number of options and formats that are very difficult to understand.
I've been keeping an ongoing list of different online learning content providers. We are going to launch with a small subset focused on technology, but our ultimate goal is to include every course, every subject, every format.
Based on what I've seen so far, below are the four categories for how I'd segment online learning formats. Keep in mind that each source may have hundreds of different courses, and they also vary wildly in duration, availability, price, difficulty, etc.
1. University Courses & MOOCs (massive open online courses)
Examples: Coursera, edX, MIT OpenCourseWare, Canvas Network, FutureLearn Ltd
These courses largely follow the traditional university format. They are taught by a professor, delivered on a semester schedule, and include video lectures, quizzes, and exams. Universities might offer the courses directly (e.g. Open Yale Courses), or, partner with a third party platform like Coursera to deliver the content. Most do not offer transferable college credit, though that may change in the next 12 months. Because these are essentially still college courses, the content tends to focus more on theories and fundamentals, less on concrete skills. The most popular courses have hundreds of thousands of participants, though typically fewer than 10 percent of enrolled students will finish.

Pros: Free; good for introductory material; access to brand name schools and professors; global participants
Cons: Available only as scheduled; semester-long duration; homework/quizzes/exams
2. Interactive Web Tutorials
Examples: Codecademy, Treehouse, LearnStreet, Code School
These sites teach you to code through a series of interactive exercises in the browser. You complete the steps at your own pace and can immediately check the results, often in the same screen. The courses are broken down into bite-sized pieces. Most sites cover a variety of programming languages - HTML, CSS, Ruby, Javascript.
Pros: No installation required, self-paced
Cons: Narrow focus on programming syntax & structure (very little on fundamentals or frameworks), steps are very basic for anyone with previous programming experience
3. Videos & Screencasts
Examples: Lynda, Udemy, Skillshare, General Assembly, PeepCode
These sites have rich catalogs of learning videos covering a variety of topics. Some are scheduled for certain dates and some are always available. Some enable interaction with the teacher and classmates, others do not. I took a One Month Rails class through Skillshare that walked me through the process from installing Ruby on my machine to launching a real web app on Heroku.
Pros: Self-paced, always available, short durations (typically <10 hours of total content)
Cons: Generally requires $
4. Other

I'm still trying to make sense of this category. There are some great online resources that don't fall neatly into the above. For example, Michael Hartl's Ruby tutorial, which is essentially a book. Or WagMob, which is based on mobile apps.
As you can see, there are lots of rich resources available on the web, even just for technology!