Generally, it has become a cesspool of ads and useless posts by narcissists. The site has allowed its fundamental value to be diluted by so many short term money grabbing interests that there's no going back.
(1) How we can we let addicts shoot up in a way that is safe for them
(2) How can we let addicts shoot up in a way that is safe for their community
Pardon my ignorance, but I think we should be focused on the safety of the community (2), more than how addicts can continue to abuse drugs safely (1).
People have abused drugs for a long time (alcohol included), which results in self-inflicted repercussions. Natural selection tends to weed these genes out if such people don't exert self-control and make a permanent clean break, as difficult as it may be.
My solution: legalize all drugs in limited geographic areas — far away from society at large (along the lines of Vegas). What happens there stays there, and feel free to stay there forever if you'd like.
I don't say that to be insensitive. I myself enjoyed alcohol too much, until it got me in enough trouble enough times that I decided the pain it caused my family & friends wasn't worth it. I had 2 choices in front of me: drink my life away and drag the people I care about with me through it all, or man up and swear it off for good.
I chose the latter. No therapy, AA, etc., just a deep sense of the injustice and lack of empathy in my actions, and living (and dead) examples before me in my family.
Had I been so weak to continue favoring my short term pleasure, it would serve me right to die early and put an end to everyone's pain (my own included).