If there is to be a possibility of a mass Christian revival (or, some other form of Christian revival) - I think it would be more likely to happen by the medium of lecturing, rather than from books, TV or the internet.
There is a gross underestimation of the power, the potency, of the lecture. It is regarded as all-but obsolete. Yet hard historical evidence shows that, in the right (or wrong) hands; the lecture - reliant upon the power of a person and his words, with an attentive audience, happening here and now - has power to create and sustain new movements.
And this has happened, and could happen, very quickly, and under the radar - since face to face lectures are outwith the tyranny and distortions of the mass media.
Such a movement is in principle as likely to be wicked as good; Antichrist-ian, as well as Christian.
But now purposive evil holds the megaphone of the mass media, and has groomed the mass population into a very complete state of addiction - a population now scarcely able to tear themselves away from the drip-feed of stimulus, intolerant of solitude, unable to concentrate - so there is little reason for the dark forces to look elsewhere.
By 'lecture' I am not talking about demagogues haranguing vast crowds by use of electronic amplification, video screens, visual gimmicks etc - that stuff is mass entertainment, part of the mainstream mass media.
I am talking about face to face communications in a room where the participants are in direct visual and auditory contact, when all can look into the eyes of the other - dozens of people; not hundreds.
A travelling lecturer, and the triggering of new lecturers (lecture upon lecture, snowballing) may lead to extreme rates of growth; and as with all exponential processes - by the time the new movement is first noticed as significant, it will already be large, and have developed considerable momentum.
The mass media is the major locus, focus and enforcer of evil (that is, the destruction of Good) in the world today; but it could be by-passed - and suddenly swept aside, in the lives of many; by something very like a lecture.