Quirky.com

Quirky is a website that uses social networking to develop new and unusual products.  A lot of the products developed on the site are "geeky gadgets" or accessories to I-pads, cell phones, etc.  The site seeks ideas for inventions from the web community and then solicits responses from the community as to the feasibility of the ideas.  In this way, it functions as a kind of pre-market test.  What do you think of this as a vehicle for creative product design and innovation?  I'm thinking of sending them my idea for a shopping cart-mounted taser.  A little shock to the butt will get those lazy aisle-blocking consumers to move their carts to the side!