tenshu, (sorry for the late reply) do you allow html and or images in your posts, and signature lines? If so this will increase load time. It shouldn't increase bandwidth unless you allow them to upload them to your server (or you do).

Bandwidth is the total of:

1) html code
2) text
3) images
4) scripts, etc..

This added up per page per time loaded is the total cause of any and all bandwidth.

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