I get a ton of PMs with questions about girls on facebook, and not just PMs, people ask me in person as well, there seem to be a million mysterious girls on facebook that are seen as potential virginity takers among the young members of the community.
I am sure some guys are going to get upset and argue with me about this post mostly because they can't stand to hear the truth, but as usual when it comes to my posts I'm going right at it, I don't dance in circles around the truth, this is the way it is.
A ton of guys are sitting home and alone on Friday night, their more popular, more appealing (in whatever way) class mates are out at parties or on dates, the home sitters finally find a book like "the Game" * or "Double your dating" ** and later find their way in to the community to find help with their problems, many of them succeed but I believe even more of them fail and give up trying to improve themselves.
So the guys who don't have the same network of friends and outgoing personality as the popular kids usually end up sitting in front of the computer.
And here is the interesting thing, the popular and gutsy guy will hit on the girl in person, the lonely home sitter will chat with her via facebook, msn, Gchat or whatever is more relevant. He will sit at home in front of his computer and hit on the same girl!
He will get a comment from her with something like "haha you are funny". He will rush to log in to the PUA chatroom and ask for advice, "is this an ioi? what's my next step".
See here is the thing pal, and please take this advice to the heart, when in comes to pretty girls, you are always competing against someone, and it might so happen that this "someone" is someone she usually meets in person, in this case your internet personality which probably does not at all reflect who you really are will have to compete with the other guys actual real life personality.
Think about the disadvantages you are getting, you can only talk to her when she is online, you can't see her body language response to your "routines" or comments, you can't impress with body language, you can't kino, you can't use different tones of voice to your advantage, techniques such as NLP are useless, and if you do set up a date with her; she won't really know the real you and the chances that she gets disappointed and blows you off are larger than if she already knows you pretty well in person.
I am not asking you to stop your online flirting, I am advising you to reduce it and use it with care. The internet is a great place to meet someone for the first time, the internet is also a great place to stay in touch with some girl you are flirting with in real life, but try to remember this, internet game should evolve pretty fast.
If you met the girl online and has never seen her in real life you should aim for a number close within 3 emails or 3 days of chatting.
If you are flirting with someone you already know, I recommend that you remain cool, fewer words, entertain her a little but don't give her enough, because if she thinks that you are funny she will want more, don't give her more, ask her out instead and she will be intrigued to see more of you.
You don't have to be funny, the same goes for if you have an interesting topic to talk about, make sure you finish the conversation in real life!
These were just a few words of advice about online gaming, it is useful but don't over use it and don't let your entire game rely on it, even if you first met her online through a dating site or similar, try to set up a date as soon as possible!
To the mods: If my post title got you attention by making it look like I was talking about a specific case in the lounge, thus potentially breaking a rule, I did that on purpose 
*Neil Strauss
**David DeAngelo
CHAT
