Below is a list of imagehosts that allow hotlinking..

http://imageshack.us
http://photobucket.com
http://tinypic.com
http://imagecabin.com

this list will be updated periodically.. so if you have anything to add, feel free to do so.

i suggest that you go with imageshack.us because you dont have to register, and you can upload as many images as you want.. and there is no limit on bandwidth..

i suggest that you register an account there.. it is free, you have unlimited space and bandwidth, and you can keep track of your images.. so if you lose the link to your image, you dont have to re-upload it.. just go to imageshack, and click on "my images"

i have an account there and i have 80 pages of images..