Tweaknews.net has posted a review on the Cirago Micro USB Bluetooth Adapter
This USB Bluetooth adapter from Cirago may be one of the tiniest currently on the market, but it performed admirably and exceeded my expectations. Even with the devices in different rooms I had zero connection problems between the adapter and my cell phone. The presence of other 2.4 GHz wireless signals in the house didn't cause any interference either. For a mere $25, you can't go wrong.Cirago Micro USB Bluetooth Adapter Review