&gt; If you think about it, the only thing that RSS&#x2F;Atom was ever missing from becoming what Facebook&#x2F;Twitter are today is a central aggregation point in the cloud. A smart startup [...] could potentially spell the death of proprietary timelines.<p>I&#x27;ve got the feeling you underestimate how important this central aggregation point actually is. Imho I&#x27;d even say it&#x27;s the paramount reason Facebook&#x2F;Twitter are still the top dogs, people are just attracted to the (unique) aggregator which already has the most people.