Cobra's new PhoneLynx ($60) is one of those brilliant inventions that makes you wonder why or if it hasn't been done before: it's a Bluetooth bridge between your iPhone and landline telephones. PhoneLynx enables you to turn off your land line telephone service if so desired by letting iPhone calls ring through directly to traditional telephones, using a wire to connect to a landline phone, plus a wireless Bluetooth connection to your iPhone so that…
