I am wondering now. In facebook group you can build your followers and audience, you can create a message and all people who likes or follows the group will get it. Same is for list building service like aweber, get response. For example, nowadays I rarely optin to any list and I better chose to follow on facebook, its more easier to check group, I have ability to communicate with other people in the group.
So i am thinking now, what is the biggest differences between fb group and list in autoresponder service?
Maybe facebook groups become more useful than list in autoresponder?
what is your thoughts?