Ultimately it is what you make of it. Can't make more than what it can actually do for you. There's times where this place has been bad for me, but that was because I was in bad spots mentally and it become my only source for social interaction and social support. And kinda is atm still. And a reason not to improve ironically, but that'd be on ME, not the site. For It did the complete opposite months ago, and helped me get out more and conquer things because:
I've made genuine friends, online yes - but ppl that beyind the cyber lines and text are real people with real issues we can connect with and relate to and not feel so alone. Any support is better than NONE - we NEED social support, and so many cannot get that in their RL's for various reasons. Online will never match RL support, but it's something, and can lead to RL support and help.
So sometimes in can be a love-hate relationship, but has to do more with MYSELF then the actual site and people. So in short, YES.