For the past year I have been quite active on SO and a bit on meta, but I had never heard of the timeline of a post until today in a comment on meta.
This feature was requested by a user half a year ago, answer: this exists, but the link has to be built manually.
I think this could be quite interesting sometimes and I would like to use this, but I will not do so if I have to build the link each time by myself.
This feature has existed for two years and is still "experimental"? Who is using it? Who knows about it?
My feature request: Implement a link in the posts to their timeline. I am sure this nice feature will be used.