I recently remembered this article published in The Chronicle of Higher Ed a few years ago. It speaks volumes about some pros and cons (mostly pros) of using technologies like Twitter, online office hours, video chat, etc. to connect to super-sized classes. Though I do not have personal experience in teaching courses with this many students, I still think this teacher has found a way to utilize modern technologies to connect to students in new and important ways. He has taken what many of us would consider a nightmare classroom situation (teaching over 2000 students!) and made it into a classroom experience like no other. If you read through the comments, you'll see that his former students say he has changed their lives and that his was the best class they've ever taken. It's amazing to me that he is/was able to create personal connections with so many students using technology. Basically, if this guy can do it with 2,000+ students, then many of us should strongly consider how we might benefit from these technologies in our own hybrid courses.