Michael Abulencia, e-Learning Technical Developer, at Virgin Australia, discussed the motivations for use of e-Learning. One example he gave was while introducing a new uniform for staff, at they same time they provided training in how to walk (including not running for safety). One motivation for staff is promotion, which can provide them with motivation for undertaking training with a wider view than just how to service one aircraft.
Michael warned about getting sidetracked by hype. He mentioned Gartner's Hype Cycle. Unfortunately, of course, it is very difficult in advance to work out what is hype and what will turn out to be a useful technology. The solution seems simple enough to me: learn from the experience of others (which is why I am at this event).