Thread:Josephyr/@comment-26249100-20151018130506/@comment-1251315-20151019144001

IP blocks are useless. Until IPv4 style addresses are completely eradicated and replaced with IPv6 addresses, an IP block is pointless: you'll catch way too many legitimate users with them. This is because IPv4 addresses are dynamic and being recycled by the ISPs, due to all the addresses being used up. Therefore, the vandal might have IP address A, but next day, an innocent user will get that address and end up blocked.