We check this website, now rethinkgroup.org is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is rethinkgroup Down Right Now? - NO! rethinkgroup is up!
If you have problem with access to site rethinkgroup, and domain rethinkgroup.org is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).