Interesting. I think this is useful if implemented correctly.
I had an idea similar to this a few years ago. Basically, you would be able to bookmark your place on the page and come back to it later or send the link to someone else. I didn't think that using a word or phrase was useful because it could show up multiple times on the page. Instead, I used the scroll distance. Here's a crude demo:
I had an idea similar to this a few years ago. Basically, you would be able to bookmark your place on the page and come back to it later or send the link to someone else. I didn't think that using a word or phrase was useful because it could show up multiple times on the page. Instead, I used the scroll distance. Here's a crude demo:
http://jboyer87.github.io/page-progress/
Of course, this isn't device-independent. I never went much further with it.