There is a very easy sanity check as for how much the jw.org / tv.jw.org actually help in terms of contacting people: Simply ask yourself when you went to lds.org, or scientology.com, or somewhere else and was so impressed by the site that you read several articles and thought about the information. this is how outsiders view jw.org.
I am very sure the top brass view this as mostly an internal campaign and in terms of tv.jw.org this has IMHO pretty much been confirmed by the way the GB members say things on JW TV that makes little sense to outsiders (e.g. Anthony Morris in the last show said: "as many of you know I am a father"; this is not someone talking to an audience mainly composed of non-jws).