This doesn't seem to be consistent in the way it is trying to help me; for example, a search for "tympanuchus cupido" (the genus and species name of the greater prairie chicken) returns only phasianidae, the family to which prairie chickens belong. Meanwhile, a search for just "tympanuchus" (the genus, which includes more than just prairie chickens) returns Attwater's Prairie Chicken National Wildlife Refuge, which seems only tangentially related. Terms with multiple meanings (which is precisely what structured search is supposed to help with) don't seem to recognize this multiplicity--consider a search for "peripatetic", which is both the name of a school of ancient Greek philosophy (which is recognized in the results), and a term meaning wandering or itinerant (which is not recognized, even when the search is changed to "peripatetic definition"). Even the most straightforwardly categorical queries don't seem to work that well ("dungeons and dragons classes" returns a list that is neither complete, nor correct). Speaking of neither completeness nor correctness, if you think my query choices were a little too farfetched, consider the query "search engines"--it returns none of bing, Duck Duck Go, and cuil in the first 50 results (although, somewhat entertainingly, Yahoo is the first result and Google is the second).<p>Is there something I'm missing that this engine actually does well?