ASCiiDiTY
Actually, all blogs commenters use a lot of bandwidth because they download the whole HTML code -- and sometimes, if the software is cheap, even the images! In TLPC's case, the HTML code is downloaded for two reasons:
1. To get the platform, which is necessary because not all comment forms are constructed the same way.
2. To get special variables like the form ID.
Therefore, the process takes lots of bandwidth. However, I'm working on some complex mechanism to reduce the bandwidth usage; it should be available in BETA 4 or 5.