When Dogpile.com announced this week that it had added MSN Search to its collection, it also announced something any Web researcher should know: The top search engines turn up very different results. Dogpile cited the results of a University of Pittsburgh and Pennsylvania State University study "showing a surprising lack of duplication in the top results of the major search engines," Internet News reports.
"When the researchers ran 12,570 different queries through search engines at Yahoo, Google, MSN and Ask Jeeves, they found that only 1.1% of the results appeared on all four engines, while 84.9% of the top results were unique to one engine." Dogpile is what's called a "meta-search service," meaning that the search results you get come from several regular search engines - in this case Google, Yahoo, AskJeeves, and now MSN Search. Parents will want to note that Dogpile.com does offer filtered searching (what I'd call a fundamental online-safety measure for connected households with kids), but it's a little harder to find than, say, MSN's or Google's SafeSearch (under "Settings" and "Preferences," respectively). When you're at the Dogpile.com home page, click on "Advanced," then scroll down to the bottom of that page to find "Adult Filter," then click on "Preferences" to turn the filter on and keep it on (unless/until someone changes the setting). To make this online-safety measure work, of course, it usually needs to go with a rule about how kids use only designated (filtered) search engines and may not turn filtering off (or they lose Internet privileges or some such consequence).
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