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A few months ago I ran a Tor relay node with no exits for anonymized web traffic. Apparently as a result of being on the Tor directory listing, Slashdot admins decided to ban my home IP from being able to login. Because my cookie has been valid since then, I didn't notice until a few weeks ago when it got wiped. I'm now banned from my primary IP address, so when my cookie expires I am no longer able to login.
If I'd known computer science was going to be like this, I'd never have given up being a rock 'n' roll star. -- G. Hirst