E-Learning For Short Attention Spans (by Penny Lunt Crosman)

Link to article
"On-demand training increases productivity by keeping employees on the job while they learn. Plus, advanced users offer tips on short-segment content that keeps students engaged...
Experienced e-learning practitioners have found that it's better to shorten the lessons into digestible bites and deliver them to employees' desktops so they can apply their new knowledge right away...Another aid in keeping students engaged is making sure the learning content is useful and interesting ...
One hurdle in e-learning is cultural resistance from employees who have a sense of entitlement to weeklong, offsite training programs. Some older workers also fear using a computer in general, let alone taking courses on it...
Ideally, experts throughout an organization can create small e-learning "objects" that are easy for users to find and review..."

Yes, content or learning objects should be small chunks of information that are meaningful, relevant, useful, reusable, interesting, and straight to the point. Especially, when you are online, your attention span is very short (Also, a lot of distractions ). This article also discusses the importance of quality content and simulations, collaborations, L(C)MS scalability and performance, ease-of-use, and much more.