Absolutely unrelated to Ronald's original post, but it's ironic that the abuse@ address is itself heavily "abused", by commercial copyright enforcement companies which think it's a catch-all address for things which are not operationally related to the health of a network (BGP hijacks, DDoS, spam email traffic, botnet/virus/worm/trojan traffic command and control and such).
Despite the presence of a registered DMCA agent address[1][2] for an ASN, many companies continue to flood abuse@ with copyright notices. Ask any ISP that operates in the English language Internet but is not physically located in the USA (NZ, AU, CA, etc) how many USA-specific legal threats their abuse inbox receives. Usually for something like a residential customer torrenting a TV show.