1. Thanks notification

This experimental feature offers a new way to give positive feedback on Wikipedia. It lets editors send a private 'Thank you' notification to users who make useful edits -- by clicking a small 'thank' link on their history or diff page, as described in our overview page. (1)

The purpose of the Thanks notification is to give quick positive feedback to recognize productive contributions. We hope that it will make it easier to show appreciation for each other's work -- and it should be particularly helpful for encouraging new users during their first critical steps on Wikipedia. 

We have intentionally kept this notification as simple as possible, so we can all evaluate it and improve it together. Once you have had a chance to try it out, we welcome your feedback about this feature, and look forward to a healthy discussion on our talk page. (2)