Sign agreement when joining or logging in first time [SOLVED]

Plone Support Administering Plone sites
10

I changed the messages to be able to use html.
Then I used plone.login to add an adapter as you suggested.
This lets me show a 'form' on login without the need to redirect.
From a UI perspective, I am very happy with this.

One note: Status message with links - #3 by espenmn