It's time to review the week that was on ReadWriteWeb. It was a very busy week on the product side, and not surprisingly it was dominated by the release of Apple's 3G iPhone and the accompanying App Store. Also this week Google launched a virtual world, Yahoo opened up its index and search engine to outside developers, and there was a (unconfirmed) rumor that Twitter had bought Summize. On the trends side: we analyzed the problem of spam in social networks, and investigated why 'old school' bloggers dominate in new apps like FriendFeed and Twitter. Web Products iPhone 3G Released... [Tags: 11 july, browser plugin, coherent world, countries around the world, free applications]