Jog the Web is a free site that provides you with the ability to create a guide to a series of web sites. You set up the "Jog" with a variety of websites and annotations. The Jog takes the viewers step-by-step through these web sties with guiding questions and comments and notes.
This is a great way to quickly create webquests and online learning activities for students in your class. Students can go to different sites and use the site to answer questions that the teacher has posted there. You can also add instructions for each site the students are viewing.
It is free, easy to use, and you can even see and use other Jogs on the site.
Here is an example: