IHeartWomen, you are right to an extent. Girls get an abundance of messages from all varieties of men, however, I find that the biggest problems are:
1- Lack of emotion in the cyberspace. In person, on a face to face basis, you can apply emotion in all manners such as tone of voice, physical actions like touching, holding, and can apply audible pauses to build suspense and allow for laughing, snickering, or whatever else the women may be doing. All of that is possible in person.
2- Time: Face to face, you can push a women into a pressure situation (in a good way) with the types of questions you may ask her, i.e, "Are you single," "Outside of this place, what do you do for fun?" Questions like this force the girl to think on the spot, while cyber space allows her the time to formulate a response which is significantly different from what she would be saying in person. The time she has over the net allows her to become conscious of her response, she can read and re-read what she is writing, and meticulously formulate her messages to suit her, and not you.
3- The abundance of messages she receives: As you said, the girl you are trying to talk to probably has a significant amount of guys pulling for her attention as well, but most come with the same messages like "Hey, how was your day?" "When we gonna fuck?" "Wanna go out?" I've seen a lot of them, and girls become so auto-piloted by these messages most of the time they don't take a second look, and sometimes a first look at your message. Thus, you have to find a way to formulate an initial message to get her laughing, or at least interested in talking to you, and that is the hardest part. There is no formula to use to create a "perfect message," and as Light has said, this is the primary reason you chat with girls who mean nothing to you online, because their is no guaranteed way to get a girl talking, and if you have your hopes up about a special girl who likely will never respond, or will only half-assed respond, you find yourself hurt, and depressed.
ALL THIS BEING SAID, I AM CURRENTLY EXPERIMENTING WITH ONLINE INTERACTIONS TO LEARN MORE AND SHARE WITH THE COMMUNITY. AND I AM ALSO CURRENTLY TRYING TO GO AFTER A GIRL IM INTERESTED IN VIA FACEBOOK TO SEE WHAT HAPPENS (BUT THIS IS CURRENTLY MY ONLY WAY TO TALK TO HER). HOPEFULLY I WILL HAVE SOMETHING NEW TO CONTRIBUTE TO THE SOCIETY SOON.