This website will email or text you at designated intervals to remind you of whatever text you choose. Good for learning vocabulary.
Limitations: You need to install a bookmarklet to use this. When you use the bookmarklet, it appears not to work, but it is actually working.
Creates HMTL quizzes. The learner gets the correct answer by clicking on a drop-down box.
Limitations: The learner does not submit answers, so the instructor cannot know the results.
Study, Share, Connect with Your Classmates.
Allows students to collaboratively take notes and share notes on classes.
Limitations: Currently in beta. Requires a .edu email address.
Text Message (SMS), Twitter, and web Polls and Voting, Audience Response System
Now includes presenter tools so that you can create polls on the fly (during a presentation).
Can embed live poll results in a PowerPoint or Keynote presentation.
Limitations: Free version allows up to 40 responses.
Timetoast is a place to create timelines that you can add to your blog or website. You can create historical timelines of important events, or build a timeline of your vacation.