It's not all about hands free in cars any more. I was checking out some gadgets over at Coolest-Gadgets.com and found this wireless system from BlueAnt: The InterPhone Handsfree and Intercom Bluetooth Helmet Kit.

Now you can use your bluetooth enabled phone just as you would in your car, or you can communicate over the intercom to other InterPhones up to almost 500 feet away.

The InterPhone is adaptable for most helmets, including full and open-face styles. It's water resistant and windproof up to 80mph! It's compatible with all Bluetooth Cell Phones.

Features of the InterPhone Include (from their web site)

> Wireless headset for your Bluetooth enabled cell phone at a
range of up to 33 feet (10 metres)
> Bike-to-bike Intercom* for rider & passenger or two separate
bikes up to 490 feet (150 metres)
> World class Digital Signal Processor (DSP) for noise and
echo reduction
> Excellent performance at speeds of up to 80mph (130 Km/h)
> Microphone incorporates anti-noise and anti-wind feature
> All weather, water resistant including heavy rain
> Large multi-function button for easy use with gloves on
> Full duplex
> Automatic volume adjustment depending on speed induced
environmental noise
> Configurable with Bluetooth Headset compatible GPS devices
> Easily mounts to all full faced and open faced helmets
> 2 clip mounts included - Clamp mount and Adhesive
> Voice answer, voice dialing & redial
> Up to 10 hours talk-time or 700 hours standby
> 2 year replacement warranty

It can be had for under 200 bucks.