How much internet traffic does a 3.5GH/sec pooled miner use?
The internet traffic for any miner is generally minimal and in most cases the miner speed is irrelevant. The Getwork protocol would at most make a small request every second, but with extensions such as rollntime, one can make the request less frequently. You can roughly see how much data is being sent from the examples provided here. Generally, you shouldn't worry about the internet speed or bandwidth.