How fast is your connection?
You may find that your ISP is already offering tiered Internet service -- mine does (Comcast). If that is the case, you better check and make sure you are getting the speeds you are promised. How might you do that? Try Speedtest.net . You will need Flash 8, though they promise a Flash 7 version for Linux users (this week). Fortunately, I had pretty good results with the testing. I wonder if Comcast keeps up at the higher speeds.