This week’s show starts with a Tech Update with MainMenu Executive Producer Chase Crispin. Rick Harmon introduces us to the Four Square app for IOS devices and takes us on a tour of the app and the website. Dan Eikmmeier reviews the Aether Ham Radio Loging Application. And, David Woodbridge from Vision Australia demonstrates sharing notes between the iPhone and the Mac using the Single Text application for iOS and Apple Lion. It’s all on MainMenu this week on acbradio’s Mainstream! Main Menu can be first heard on Fridays at 9:00 pm Eastern time. It airs throughout Saturday on ACB Radio Mainstream. http://www.acbradio.org/mainstream It is also available in the iTunes store, in the iBlink Radio app for IOS and Android devices, and is available to Radio Reading Services around the world. Subscribe to the Main Menu podcast feed at: http://mainmenu.acbradio.org/rss.php Follow MainMenu on Twitter at: http://www.twitter.com/mainmenu Subscribe to a list where you can interact with other Main Menu listeners and the Main Menu staff by sending a blank email message to: mm-friends-subscribe at acbradio.org