According the the Facebook Developers blog, Facebook is now granting developers on Platform the ability to request (or require) users to hand over their email addresses. By doing so, developers can begin sending periodic messages directly to users. This actually doesn’t come as a surprise: Facebook initially talked about e-mail requirements last October and has kept developers updated on the timing in its Developer Roadmap. All of that said, this is a big deal! Up until now, Facebook applications have used the notifications window (that slide up panel in the bottom right hand side of...