Gadget Grrl from TheStreet.com wrote a short review on the VholdR.

"This camera has a threaded mount that is specifically made to attach to a helmet. You could also attach it to a hat and grab some pretty interesting footage at a sporting event, or at an outdoor concert, or along a street in a crowded city.

The camera shoots MPEG4 AVI, and there is a 1GB flashcard included, which should give you about 50 minutes of video at 640x480 @ 30 (frames per second). That's fine to put on the Web.

You can also upgrade to 2GB with a microSD card. Once you have shot your footage, you can download it via USB. If you've got really exciting footage, you can go to Vholdr.com and upload it.

What I like about this camera, besides the durability and rugged casing, is the ability to get footage that you would not normally be able to get for fear of dropping or damaging another more fragile video camera.

Whether you are zooming down a dirt trail or heliskiing, this lightweight camera (3.75 in x 2.1 in x 1.35 in and 4.8 oz) can grab incredible shots along the way. "

View the entire review here.