Ways to make learning trails on the web

This is an extension for Firefox that allows you to create a trail, add an annotation to each page, and also allow others to comment on individual parts of the trail or clone the trail itself; seems to have almost everything you'd need!

So in the context of informal education, or education with pre-defined cohorts, open annotation tools like these ones make some sense (though potentially the amount of cruft you'd end up seeing could make them unusable, as is the potential for 'annotation spam' ick) but it would be interesting to see annotation tools like this integrate with people's instant messaging buddy lists so that you could leave messages attached to web pages that could then be filtered by whether you were on somebody's buddy list.

This is less to do with creating a trail and more to do with how users might interact with each other around specific pieces of content

This seems like it might be similar to Trailfire but specifically aimed at education. Nice idea though, and makes tons of sense in regards to supporting learnings dealing with open educational resources.

Not so sure about Google Notebook; it seems more like a personal tool that might be useful as an easy way to collate notes, perhpas share them with others, but it doesn't seem to have as strong a sense of linearity as Trailfire

Apparently there is a huge list of browser-based annotation software, yet I'm not aware of any of it getting traction. Why not? This seems another logical place for "connectivist" inspired educators to work on.

Another Firefox extension for collaborating around web pages