Slate wants your suggestions on the most useful queries that, when given to a variety of search engines, neatly show the differences between them. To borrow an example from my review of Powerset, the phrase "Who shot John Lennon?" demonstrates the semantic search engine's ability to answer simple questions better than Google; more conventional queries usually favor the incumbent. Or, to take another approach, perhaps a given keyword returns pages on one search engine that another refuses to crawl altogether. When you send us your search queries, make sure to include your thoughts on what the results reveal about Google, Cuil, Ask, etc. Different engines prioritize results in different ways, based on notions of a page's authority, usefulness, or popularity. Like dictionaries, does this make some search engines descriptive and others prescriptive? Or are those terms out of date? If so, send us some new ones.