Yes, as long as you use some salt data that is unique per user (timestamp, random number/guid/whatever) (you have to store that obviously), then it's fine. The problem is acting as if a site-wide salt is an ok-thing. It's not.
Incidentally, as the guy who started this whole thing, I'd just like to note that I actuslly agree with this. When I said they were "OK" or whatever, I meant it in the sense of "I guess it's good they're doing something," not like I'd recommend it. Please nobody get that idea.
