I like this idea a lot, except knowing me, I'd clear my cookies and cache and just read HN not logged in until I could login.
Maybe a way to get around this is to remove the links (not the text of the links, but the link functionality itself) unless you have an account and are logged in.
I guess in the end, if you don't have the self-control needed not to throw away your time reading about things (instead of doing things), you probably aren't going to benefit from being blocked from HN. You'll find something else equally unproductive to fill that hole.
Maybe a way to get around this is to remove the links (not the text of the links, but the link functionality itself) unless you have an account and are logged in.
I guess in the end, if you don't have the self-control needed not to throw away your time reading about things (instead of doing things), you probably aren't going to benefit from being blocked from HN. You'll find something else equally unproductive to fill that hole.