Meaningful interaction among students in online courses
Simply providing online discussion forums is not enough to keep students engaged in virtual courses, according to educators who are well-versed in online instruction: For real learning to occur in an online setting, virtual-school educators must establish clear rubrics and enforce rules for participation.

I was not aware of the registration requirements. However, this website has some good news articles regularly. I would suggest you register to be able to read the article in full. As part of the registration you can opt out from receiving emails if you don't want to be bothered with e-newsletters and all that sort of SPAM.