Ever try and search for the market share of a popular search engine? It’s surprisingly difficult to find out, as results rely on different metrics like revenue, unique visitors, or organic search volume. But one constant remains in any subjective view of the search engine landscape — Google rules. comScore’s September 2012 US figures show Google Sites (which includes all their search properties) responsible for 66.7% of all searches. Even five years ago, Google’s share was 57%. Their dominance has been an ongoing theme in the SEM industry and, for at least the short term, it is unlikely to change.
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