Lol, yes it eats up our data allowance and I don't want to have to charge anyone, so no attachments. There is a post about it in the forum updates though.
I'm going to remove them tomorrow so you know which ones you want to put up. Photobucket or similar are free and very easy to use though, hence why we have this option. It's the same as it was on the old forum - we didn't allow attachments there either