Might be easier. The more we rely on social networking, the less identity you have to manufacture by actually going out and planting evidence, and the more you can manufacture just by procedural generation at the target site.
On the other hand, the more manufactured background you have, the more likely something is to trip you up, either because you misremembered it when talking to somebody or you ran into somebody who was involved in the real world situation and knows you were not. The best way to get away with a fake past is to be vague, but not so vague as to arouse people's curiosity or suspicions.