 | 'Both Digg and Google (and the search engines before it) started out in what I'd call "trusted mode," where you are optimistic that a community (people submitting; a collection of pages) can be trusted. Along the way, they shift to "mistrust mode" where you realize you need to be initially dubious about everything that flows in.'
If I had more time, I'd go through and do a long compare-and-contrast on how recent Digg changes have exact counterparts in the crawler-based search engine world. Honestly, there are times when I could do a search and replace for the word Google to the word Digg in an article on spam fighting and the description would be the same.
The answer, by the way, is simple. Machines that the search engines depend on are imperfect (in particular, rankings can be manipulated more broadly), as is the human model Digg uses (in particular, humans can miss a lot of things). The combination of the two is much stronger./td> |  |