Yesterday, Andy Abramson of VoIP Watch pointed out a portable speakerphone for use with VoIP services called the miniVox MV100 USB Speakerphone. I had never heard of this before Andy mentioned it. He said:
If you think Polycom makes the best desktop speakerphones, these guys deliver something at a fraction of the price that goes with you and works very well. In most cases it has caused me to abandon using the headset entirely.
This little box is about two-thirds of the size of my Treo 650 and it plugs into your PC using a mini USB cable. It's used mainly as a speakerphone, but you can also plug a mobile phone headset into it for privacy.
mVox also has a Bluetooth device for considerably more money called the mVox MV900 which interests me because I'm always looking for things I can use with both my mobile phone and VoIP.
More information about both of these products is available at http://www.mvox.com/.