Ability to develop interactive materials. Ease of revising and updating materials in rapidly evolving disciplines. The last three features are the ones that sold me on the Web. Time that most instructors do not have. Time that often is not rewarded by the employer.
Institutions often give only lip service to supporting instructional technology.
They must be prepared to put resources into developing an infrastructure that will make it work. Difficult, when living in a time of government cutbacks. Seldom are all three abilities found in one person. Seldom are all three available in one place and at one time. Harder to read, cannot take to the park, no permanent record.