SSV MailChimp is a plugin that allows you to link other SSV plugins to MailChimp. With this plugin you can:
* Create lists for event registrants (requires SSV Events)
* Create members in list on user registration (requires SSV Users)
* Update user meta to MailChimp Merge Fields (requires SSV Users).
* Etc.
This plugin is fully compatible with the SSV library which can add functionality like: Users, Events, etc.