Humanizing features

Many readers of Wikipedia are still unaware that the site can, and is created by people just like them, we still get reports of people who are concerned that they've "broken the site" when they accidentally enter edit mode. There are many small changes that can be made to the reader experience to show users that articles are things that change, grow, and are refined over time by people just like themselves.

Some ideas so far:
Last edit notifications : Show the last editor to contribute to an article with link to change history and user page (currently in mobile beta)

Visual history : Visualise the edit history of an article so you can playback or scrub through the building of an article (extension of work by community member jeph)

Top editors: Show the editors with the most contributions to an article overall and in the last fixed time span with links to their profiles

Visitor Velocity: Visualize traffic to a page so that users can see how it changes over time, especially interesting for new or current event articles. Link this to the Visual history.

Critical reading: Encourage readers to request/check/provide citations by (a) making it easier to do so, and (b) indicating the user that requested/provided the citation.