Yes. There was a girl that would beg for money so she could get back to college, then a car full of her friends would come by and pick her up and they'd probably go buy drugs. I gave money to a guy in the parking lot at my old work and watched him immediately walk into the liquor store.
I didn't mean to hijack this thread and make it bad though...I know there are a lot of people that do really need help, but I also know the only person that can usually truly help you is you.