If you want a charm that hangs 'round your neck and glows whenever your friend Missy tells you she loves Justin Bieber, then eMotion Inc has the gadget for you. The BFF Gemz sends pre-written coded messages to pals up to 450 feet away, which they can access the next time they're at a computer. You can add up to eight best friends (the BFF currency devalued to Weimar proportions) and four more if you buy some GPA: Girl Power Average points. It's not entirely private: Mom and Pop will get a weekly email, listing who you're messaging, so if you swap notes with that gal from the wrong end of town you
