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Laptop users interested in a simple USB based Internet Firewall device may want to check out Buy.com right now. If you checkout with *cough* Google Checkout, you can get this Kensington Personal Firewall for notebooks (#64183A) for a no frills price of free.

Regularly priced at $30 with available rebates of $10, the total checkout price is trimmed down to $10. Additionally, thanks to Google Checkout’s giving nature of dropping an additional $20, you begin to see how this device comes out to $0.