Hang on to your kneecaps, folks. Google's just announced that its making the Galaxy Nexus HSPA+ available in its Play web store for $399 contract-free. That's right: the unlocked, unbranded, pure Google, 16GB GSM version everyone's been importing from foreign lands far and near is now officially available in the US -- booyah! The handset ships with Android 4.0.4 (Ice Cream Sandwich) and comes with Google Wallet pre-installed (including a $10 credit to get you start