Simon Waldman of the Guardian offers a sober overview of RSS and news aggregators - ''Opportunity or Threat?" - based on a talk he gave to publishers at the World Editor's Forum in Seoul (via paidcontent), concluding that "we are looking at the first moves in a quite profound and permanent shift in the way that people engage with content. And that brings with it both opportunities and threats." He adds: "Those who deal with the issues thrown up by RSS and aggregation over the next 18 months will, I believe, find themselves in a much, much healthier shape to face the next set of challenges that the internet throws our way." The reward, he sums up, is likely to be this: "Relevance, presence and revenues in a fickle and fragmented world."