It's the end of an era, folks. See that block of text up there? That's AT&T's promise not to keep you from installing whatever Android apps you choose. Starting with the Samsung Infuse 4G, you can expect the carrier's new Google-powered phones to have that all-important "Unknown sources" box available to toggle at will. As we heard in March, the measure was designed to let third-party markets like the Amazon Appstore function properly, but don't let that keep you fr
