The recent law that several states passed requiring motorists to use hands-free devices (i.e. Bluetooth headsets and speakerphones) is undoubtedly a good thing.

But if you're still on the fence, SpeakerPhone - Auto On is a freeware app that runs in the background and will, as the name suggests, automatically turn on your device's speakerphone when you receive a call.

Be sure to grab the latest version of the app, and follow the installation instructions.