Solution #2: We should give blocked users a way to re-gain access to the site, namely by creating an account. I don't know if this is currently possible, but it should be. We can block accounts a lot easier than IP addresses. So we could basically say on the block page: "Because IP addresses cannot be reliably linked to individuals, it may be that you receive this message in error. In that case, or if you want to change your behavior, please create an account and sign in, and you can continue to use Wikipedia."
I definitely agree with this. I was quite surprised to find that when my (proxy server) IP was banned, I was banned too - even though I was logged in.
Incidentally, my (default) proxy (194.117.133.196 cache-haw.cableinet.co.uk) is banned again - my ISP also caters to the recent goatse.cx vandal. I know how to manually change my proxy, but other valid users on Blueyonder in south west England ([[user: Nosrail]] for example) may not.
Rob user:rbrwr