Yes it has.
Well whenever someone falls in love, there's almost always aspects of that person that they don't know about. There will always be risks involved in love. No matter what. Humans are very curious about the unknown, that's how relationships start. The girl that sits next to you in class, you want to get to know her. Despite knowing very little about her, there's a feeling in your heart, and then you realize you have a crush. You may even feel kinda down if she starts dating someone else. But why? You don't even know her. Is this foolish? Who knows. But it's what makes us human and have been the commencement of a lot of relationships.
Also, it's funny how some of us look down on others for falling in love with a person online. Yet I'm sure that a lot of us fell in love with a particular book, a song, and even a 'childish' manga. All thoughts and words generated from another human being, nonetheless they have touched us in some way. Is this foolish? Who knows. Though as I said before, we are all human.
Online, a person's personality can still manifest itself in the form of words. And as described in my second paragraph, words have a way of touching us. Though it even goes a bit further, we know that the person is human, and is communicating with us. Not a book. In my first paragraph, I described our curiosity and crush on a person we have yet to know. And being online eliminates certain barriers like shyness, we can easily initiate the dating process. All of us think and act with our feelings, so thinking one way of commencing a relationship is foolish, since a lot of humans think and feel differently. If we all thought and felt the same, the world could be a very boring and unproductive place, it's the imagination and desires of many that brought us to this stage of living.
Also, I notice that some say they would never fall in love online. But there's a difference between "You would never fall in love online", and "You would never allow yourself to be put in that position". A lot of people that speaks like this just don't take the risk, they avoid it altogether.