There's talk of opening one of those here in Toronto (thank god for Canada's liberal stance on drugs). We've already got a pretty excellent needle exchange progam (they even have a van that you can call and it will meet you where ever you are to drop off whatever the hell you need!) but there's no safe injection sites. Seems like the argument against it is always the same - that it just perpetuates the addiction problem - but I think people are finally realizing that these places just provide a watchful eye to reverse an OD, rather than help people get high.
If only they all realized that an addict is gonna take the damn drugs, so why not at least give em clean shit and a shot of Narcan if need be? In a perfect world, the gov't would take all the money spent on locking people up for drug possession, and spent it on rehabilitation and harm reduction services - then maybe we'd be in a different place with the so called "War on Drugs", eh? At least weed will be legal soon...