Does anyone know of any free web hosts which allow hotlinking (linking to an image or file from another site)? Most do not. T-Online does, if you read/write german.

If all you need is a place to put an avatar; http://www.boomspeed.com
You can sign up for a 1MB account here to store images and hotlink to them. It is intended to be used with auction sites, but would work for avatars just as well.

If you wanted to put up a homepage also; http://freewebsitehosting.net
I found a 6-month-old post saying this place allows hotlinking, but their site does not say one way or the other. They do use an ad banner.