Yes, several times via IRC. The last one, I ended up marrying. So it's true what they say, the whole business is fraught with peril
I never had a particular method, nor was I necessarily even looking for real-life sex, it just seemed to happen in the same way these things sometimes just happen in the progression of real life relationships. I wouldn't recommend online relationships as a "shortcut to sex" or anything, at least as I went about it; there was a large investment of time involved for me to feel comfortable with the whole idea.