In reply to franf:
You can link videos to the route on logbooks even if you don't have an (active) logbook. I've linked videos but have never made an actual logbook entry.
I was imagining something where, just like how you click on the video and see a video, you would click on a text file and see a page (or more!) of text.
If pdf files were supported, I guess people could even include diagrams, topos etc.