I learned about gestures for the iPad. I also learned that iPads can be restrictive when using Web 2.0 tools, such as blogger. iPads don't really like Blogger, and there is no app for that.
I plan to monitor students much like I do when we are using the iMacs in the library. If you express your expectations of student behavior clearly, you shouldn't have a problem. Students who do create a problem will not be allowed to use the tools in the future.