I don't just mean that they should fail gracefully when thefeeds aren't well formed (although that's an important part ). There are all sorts of troublesome things thatfeeds can do; they can be longer than you expected, for example, or theycan be sent to you very slowly. In all of these cases, feed aggregatorsshould try to fail gracefully, to extract as much information from thefeed as possible unless it is utterly clear that something horrible hasgone wrong and you cannot