To be able to send Campaigns and autoresponders to purchasers of a certain product.
"When you use MailChimp's Ecommerce360 feature, we make it possible to track individual visitors to your website from your MailChimp campaigns, capture order information, and pass it all it back to MailChimp"
Ubercart has this integration, Drupal Commerce doesn't.
http://kb.mailchimp.com/article/what-is-ecommerce360-and-how-does-it-work-with-mailchimp/
Ubercart Mailchimp module
http://drupal.org/project/uc_mailchimp
Mailchimp API regarding ecommerce
http://apidocs.mailchimp.com/api/how-to/ecommerce.php
Related issue
#556600: E-Commerce 360 Plugin
Comments
Comment #1
silkogelman CreditAttribution: silkogelman commentedDone! It will be released at http://drupal.org/project/commerce_mailchimp in the next few days.
We've also written extensive tutorials on how to apply the module in different usecases.
Those will be on Drupal planet and added to the documentation link section of the module in the next few days.
Comment #1.0
silkogelman CreditAttribution: silkogelman commentedadded Mailchimp API ecommerce link