From the CNS:

Pope Benedict XVI unveiled a new Vatican agency to promote "new evangelization" and assigned it the task of combating the "de-Christianization" of countries that were first evangelized centuries ago.

...and of special interest to Open Source Catholic readers, it looks like this agency will work especially through the means of modern communications media, such as social networking:

The archbishop said the council would work closely with modern communications media -- an explicit request of the pope -- and that the council's staff would operate in several languages.

The Pope's apostolic letter went on to speak of the importance of religious values and family in society, and mourns the loss of community and the fact that many live in an "interior desert" as a result of relativism and modernism.

Very poignant; we'll see what comes of this!