Existing users will be locked in even more to Facebook. New users will sign up as many of their friends start to rely on the new service.
I pause for a moment.
I think it's equally lucid to think "but I don't want to step onto your lawn!" as it is to denigrate the "get off my lawn" mentality.
The privacy implications wavered by others, if not frivolously, then for other reasons, are still of concern to me. Regardless of whether or not I'm happy to waiver them myself.