micro-forum type application for your website. It pulls your Twitter stream in near real-time (max 1 min delay), reformatting tweets into threaded conversations with unlimited nesting.
Possible tool for integration into LMS platforms?
This might be a nice way to both attach more specific help to online handouts and tutorials, giving them more context. You might even place a video tutorial made by another organization, for example, in the context of your own environment so students can make better sense of it in relation to your own library's resources.