For no particular reason, I wandered by addictionis.org tonight, and then remembered that it had been taken down. But most of it is still available at the Internet Archive, and it's the best writing about addiction that I've encountered. I linked to it years ago in passing, but figured it was worth another link.
The links to the other pages are down at the bottom of that main page. A few of them are broken, but most still work.
. . . It is probably inevitable that someone reading this entry will wonder what deep dark subtext there is in my linking to that site, so I should explicitly note that there isn't any. This is not a cry for help and I'm not aiming this at anyone in particular; I'm just linking to some really powerful writing.