*Hey wow, check out that cool locative function. It shows the physical position of people tweeting inside the building. That means that, as an angry conference speaker, you can buttonhole any Twitter creep in the audience who flames you, and you can punch him in the face, instead of letting him sidle off into the relative safety of the twittersphere.
*This ought to be a godsend for cops at demos, too.
http://site.layar.com/company/blog/microsoft-demos-layar-on-windows-7-phone-at-mix11/
