For instance, last month Yahoo had some 284 million search queries of "contextual searches." An example of contextual searches can be found in features like photo slideshows in Yahoo News, in which every click to a new slide counts as an additional query. Below each photo are results from an automatic "related search" query. Naturally, this artificially pads the company's organic search figures.
Without adjusting its numbers to account for those tactics, comScore puts Yahoo and Bing at 18.3% and 12.1%, up from 17.7% and 11.8% in the month prior. Meanwhile, Google's search presence fell slightly to 63.7% from 64.4% in April. ComScore plans to tweak its methodology by July or August, but for May's figures, others say Yahoo's share actually fell to 16.6% and Redmond was flat.