Should I buy a second internet line? I currently have Comcast cable internet (with the 50-Mbps upgrade), which is actually quite fast, and suitable for my trading. The problem is, as everyone knows, the service cut can shut off without warning. While rare, this could be devastating (especially if it occurs while away from my desk, with open positions and stop orders). Is there a way to add a second line (T1, satellite, etc.), and set it up so it would automatically switch over to the other line if one goes down? Thank you all for your input.