Bluetooth GPS receivers?

[iamanalog]

I was looking around for a small portable gps unit i could use with my phone. I was hoping for something along the lines of a small keychain or something.

I would say bluetooth is the best option but miniusb wouldnt be bad either, just kind of annoying..

The only one i found was one called Qstarz BT-Q890 nano (http://www.qstarz.com/Products/GPS%20Products/BT-Q890-F.htm)
But i cant seem to find any information on the company.

Does anyone have any expericanse with one?

[Bupahs]

I used the B-Speech GPS20C (the smallest GPS receiver worldwide) it works flawlessly. I use it with Google Maps, Mapquest %avigator 5 , MS Live, Astro Nav, ect. I love it