Folks, I am a teacher by trade. I am involved in a group whose goal is to spread a teaching method, called Power Teaching, that brings educational tomfoolery to the classroom- methods that help kids learn to love learning again. I have been using it for a few weeks, and retention is really high. In any event, the leader of our group knows I am researching online businesses, and asked my how to capture email addresses as we allow guests to download free ebooks, and resources. The thing is, this is a grass roots movement, and I know that our budget is limited. Is there a free or low cost plugin that would allow us to opt in e mail addresses to get to the free downloads? Thanks in advance for all your help. P.S. I need something that works on a Mac platform if possible.