What is MailChimp?
MailChimp is one of the best free email marketing managers in cyberspace, hands down. This is ideal for the creative small business owner or blogger.
How it works?
This script gets the client email from Facebook, Google or Microsoft and saves the email into your MailChimp List that you specify.
I made a super quick start guide to help you initiate.
MailChimp Normal version
You can view the MailChimp version here: http://codecanyon.net/item/mailchimp-subscribe-form/7123150
Mad Mimi version
You can view the Mad Mimi version here: http://codecanyon.net/item/mad-mimi-form-subscribe/7083984
Can be tweaked/modified once purchased if you know the PHP language.