July 22, 2010 On World Tech Update this week Facebook hits a new milestone, Apple CEO Steve Jobs admits iPhone 4 problems, Bill Gates calls on all countries to keep up the fight against AIDS, a new iPad app aggregates social media into a magazine format, Foursquare continues its growth, Google buys wind power and Japan hopes to deliver the 2022 World Cup in a way never seen before. Find out what’s coming up on each week’s show by following us on Twitter (WorldTechUpdate) or check out our Facebook fan page at www.facebook.com/worldtechupdate