Study suggests doctors could add to Wikipedia NEW YORK — Researchers are suggesting that doctors could be spending more time writing and editing Wikipedia pages on medical topics, despite questions that have been raised about the collaborative online encyclopedia's credibility. Medical professionals should recognize that Wikipedia has become a major online source of health information for consumers, researchers wrote in the Journal of the American Medical Informatics Association.

Is quitting Twitter more popular than re-tweeting?SAN FRANCISCO — Twitter quitters outnumber the flock of habitual tweeters on the rapidly growing online communications service, a new study suggests.

Digital River forecasts 2Q earnings below views MINNEAPOLIS — E-commerce software service company Digital River Inc. said Wednesday it is "cautiously optimistic" about its outlook for 2009. The company expects second-quarter earnings of 27 cents to 30 cents per share or, excluding items, a profit of 39 cents to 42 cents per share. Digital River forecast sales of $95 million to $97 million for the quarter.

Time Warner 1Q profit falls on cable spin LOS ANGELES — Time Warner Inc. said Wednesday that its first-quarter profit fell 14 percent on charges related to its cable unit spin-off. Amid an ad slump, the media conglomerate reaffirmed its guidance on flat profits for the full year. The company also moved further toward shedding the beleaguered Internet unit AOL, while suggesting that its Time Inc. magazine business may go some day.

Alinghi prepared to defend position in NY court MADRID — Alinghi is prepared to defend its position in a New York court in the legal battle over the next edition of the America's Cup. Societe Nautique de Geneve, the home yacht club to Alinghi, said Wednesday it will go to the New York State Supreme Court on May 14 after being summoned Tuesday to explain why it should not be held in contempt for refusing a one-on-one showdown against American crew BMW Oracle Racing in February. Alinghi said last week it is preparing to hold the best-of-three series for the oldest trophy in international sports beginning in May 2010 in Valencia, Spain.