I support the indefinite block of Saladin1970. He has made no useful edits,
I'm not aware as to how the usefulness of an edit can be judged. Can you be more elaborate on this? Perhaps provide a link to his Contributions page?
This much is, as far as I can tell, undisputed by anyone except the blocked user himself.
I don't dispute this block, but if there was no Arbitration or Community consensus (as can be determined from an RfC or a message on Administrators' Noticeboard or any other medium on the English Wikipedia) I feel this block (or any other block made in such a fashion) should not be an indefinite one. I would suggest that Abu be unblocked on the condition that he changes his behaviour, and (if necessary) be put on probationary mentorship.