Hotlink bandwidth


I have built a script that updates and generates signature images based on Xbox Live, just for me and some friends use them in a game forum. The page that shows the images is here.

So it’s supposed to be hotlinking.

The problem is that I am testing the usage for about a month and bandwidth is above 3GB for just 5 images (the forum is very popular)!

I’d like to know if this is acceptable based on ToS and if I can have a website to do these images automatically, increasing a lot the number of images.

If it’s against ToS, I’ll remove it all immediately.