On the [Commons page](https://commons.wikimedia.org/wiki/Commons:Wiki_Loves_Love_2018) their are links to the support page on Meta, which when followed give the description of additional action required to put a signature with wikitext. Instead of that, it would be great to have an action blue button that once clicked perform this changes automatically. Ideally, the button could be place anywhere on a Wikimedia site, but it should at least replace the instructions asking to edit the wikitext of the Meta page. If OOUI enable a cross site changes, it should nevertheless redirect to the modified page, so the user can see it's signature was indeed added, and a site notification should indicate that. If the user is not logged in, it might be interesting to add a modal frame with incentive to log in or sign up, but still allow anonymous signature as option.