We have a hard time picking a loser in the contest for world's worst search-engine startup: Powerset, where the founders' love triangle proved far more interesting than its technology, or Wikia Search, Jimmy Wales's laughably nonfatal Google killer. What both have in common: Their search results prominently feature links to Wikipedia, also founded by Wales. Wikia Search, like Wikipedia, has volunteers edit its search results; Powerset uses an algorithm to analyze Wikipedia pages, and tries to answer the questions implicit in users' searches accordingly. Wales is unimpressed by Powerset. But we're struck by how much he and Powerset cofounder Barney Pell have in common — a semantic link neither search engine has uncovered.