The importance of sarcasm to flirting and attraction cannot be overstated. Sarcasm is undoubtedly one of the highest modes of communication. By being sarcastic while talking to another person, you suggest that they get you - that they know what you mean and that they share a strong opinion of yours, which is a great connection to have with anyone - your friend or your potential or existing romantic partner. Sarcasm is a core of that attractive sense of humor that women want to see so badly in the guy they are dating. 

Sarcasm is a cornerstone of flirting. After you read the article on how to flirt with women, make sure that you understand that sarcasm is an essential part of creating attraction and sexual tension. You simply cannot be attractive to a woman by being boring, stiff, and excessively formal if you will, unless she is equally boring and uptight. A sarcastic comment can be one of the best ice-breakers to start a conversation with a woman and it can also build and amplify attraction on a first date or later. Imagine that you are standing in an unusually long line at a grocery store, and you want to talk to a girl who is standing behind you, and your turn to pay is about to come up. What do you think is better to say to her to break the ice: the cheesy, cliche "I like your shoes" or if you say completely seriously "Too bad this line was so short.. I wish I could stand longer - it's kinna fun."  The latter is likely to get a major giggle from a girl who can relate and who is equally frustrated with the same line and open a convesation.

Sarcasm is an integral part of flirting. When you go out on a date, and a girl asks you "Do you bring all the girls on your first dates here?" the "No, you are the first and only one I brought here" is hardly going to spark attraction. On the other hand, responding with "No, only every other girl" will show your confidence, wit, and sense of humor, and this will inevitably turn into flirting, unless of course, the girl doesn't have sufficient confidence or self-esteem to handle it.  

Of course, you should make sure that you are not sarcastic at all times, as constant sarcasm will make you come across as a social clown who is unable to remove the mask of sarcasm and be serious, or might even make a woman believe that you don't have a serious side to yourself at all (which is never a good idea). 

Sarcasm is just as powerful tool for flirting and attraction in real life as it is in online dating. Here is just one actual example of how a sarcastic chat can make two strangers want to meet each other. Notice how in that chat the guy avoids putting smileys, as he really wants to find out whether the girl can handle sarcasm and sense of humor and doesn't need "assistance" in distinguishing the funny from the serious.