Oh Jila, your sarcasm is SO HOT. You wouldn't happen to be free sometime in this century would you?
Flirting is not the same as expressing a romantic or sexual interest. This is because on the internet there is an incredible uncertainty related to communications, especially of the romantic sorts. For example, while some are comfortable dating online, others would balk at the very notion, considering it desperate or even unsafe (the latter maybe with good reason). Combine this with the fact that it is impossible to express vocal tone via internet text based communications, and it becomes very difficult to judge the intentions of any potentially romantic parties online.