This week, a New Jersey pastor announced he was forbidding his married congregants from using Facebook, saying it would tempt them to commit adultery. Pastor Mark responds in the Washington Post's On Faith blog, for which he contributes regularly, saying a move like that misses the mark because it doesn't address the motives of the heart. Here's an excerpt from what he wrote:

To be sure, some people should avoid technology such as Facebook in the same way that alcoholics should avoid liquor stores. … However, to state that such technologies should be avoided because people abuse them is a grievous error. It shifts the blame from the heart to that which reveals the heart. In the same way that people abuse technology to commit adultery, some also abuse food as gluttons. But calling for an international boycott of food is not the answer, just as boycotting Facebook is not the answer. Why? Because the issue is the heart. This is why the Bible says that meeting Jesus is akin to getting a new heart with new desires for that which is good, and new disdain for that which is bad. Even if someone does not commit adultery because of Facebook, if that sin remains in their heart, they will find another way to act upon it (even if only in their mind, which counts as well, according to Jesus).