We want to launch a signature campaign on various crypto forums. I would appreciate if the community help me find all such forums where members are allowed to wear signatures and or avatar.
Why seek far afield when the good could not be any closer by? 
Are you looking for englisch forums only?
They want to expand their advertisement by looking on more forums to promote their ICO companies, but I never heard any active forum the same as bitcointalk since so far the other's are inactive and got only few posters since they don't have much interactions.
But maybe google can help the OP for searching this other forums existing.