For those like me who were unaware of Google’s QDF algorithm, here’s the gist: Google ranks history and trust very well in its normal search. The problem is that with breaking news (or situations that change every few seconds), they have to employ an algorithm that weighs freshness instead of history. This bodes well for the searcher because when she sees that Google’s results are so up-to-date, it must be the best search engine for her purposes. Yahoo and Bing both employ similar algorithms for freshness. Hence, QDF – the algorithm that kicks in when crazy amounts of searches start to come in, and information starts changing rapidly.
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