Is there a way or has anyone already written a mod to let you use co-op on a blogspot site? I know it can be done if you use ftp and host the site your self but I want to do it on a blogname.blogspot.com address.
No, sorry... Blogspot does not support anything that would support dynamic content (which is what is needed).
Just a thought, but if the coop ad was generated on a remote server and then fed to blogspot as any normal ad, would that not work?
hmmm maybe. The problem with blogspot is there is no server side scripting available just html. So the only way I could see of serving them up would be in an iframe or javascript to pull it down but I dont know if that would validate properly.