Ask HN: Why are we ignoring social network aggregators?

With the Facebook leaks the alternative social platforms are getting more attention. But without the network effect they have difficulty expanding.

An aggregator that manages your social graph and multiple feeds will make transition between the networks easier. At the same time it will improve privacy since it won't run the FB trackers.

The aggregators were a hot topic ten years ago. Power.com was getting momentum before it was shut down with Facebook lawsuit. Is it time to build a better decentralized aggregator that will pave the way for better networks?