I'm curious, that's all. Other than a club/work place/course I can't see it being possible. I have a friend who has the courage to approach strangers and he highly recommends it, I unfortunately don't have the confidence to pull off such a thing.
You don't need confidence to do that sort of thing, the idea is that confidence will ooze out of you if you can just throw caution to the wind and go for it. The reason he highly recommends it is because it works, girls instantly think "Wow this guy must have confidence!", it's not something you require, it's something that is thrust upon you.
Have a go, you'll surprise yourself!
I met mine in the first few days of uni, her room was on the other side of the corridor.