Just as speaking professionally to live audiences requires public speaking skills, using the recorded medium online has its own particularities. As we increasingly engage in different modes of communication outside the traditional classroom, I'd think it is important we become more aware and make people aware of what it takes to communicate effectively in these different situations. I'm not an expert but try to get more informed about it, the do's and don'ts and adapt them to my particular context.
Video online, although it looks deceptively easy to make with the present technology, is particularly complex as it demands not only appropriate tools, extensions, codecs and what not, for capturing and editing sound + image but it also involves the speaker (or speakers) who should use the skills needed to transmit the message and motivate the intended (absent) audience + a camera operator, who should know which filming techniques are to be used to enhance the message and not create the opposite effect.
Big mistakes in any of these areas represent a nightmare in the post production phase as editing becomes very difficult if not impossible. Better prevent them from happening or at least minimize them during the pre-production and production phase.