The Lenna (or Lena) picture is one of the most widely used standard test images used for compression algorithms.'lena' or 'lenna' is a digitized Playboy centerfold, from November 1972. (Lenna is the spelling in Playboy, Lena is the Swedish spelling of the name.) Lena Soderberg (ne Sjööblom)
Her sinking with the loss of almost 1,200 lives caused such outrage that it propelled the U.S. into the First World War. But now divers have revealed a dark secret about the cargo carried by the Lusitania on its final journey in May 1915. Munitions they found in the hold suggest that the Germans had been right all along in claiming the ship was carrying war materials and was a legitimate military target.
"Only one third of a search engine is devoted to fulfilling search requests. The other two thirds are divided between crawling (sending a host of single-minded digital organisms out to gather information) and indexing (building data structures from the results)." By George Dyson