不要说妄自菲薄的话。 不要过于殷勤。 千万不要显得粘人。 语言不能粗俗。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Simply put, confidence is sexy. This is more true for real-life situations than it is online, but this mantra has some truth in the world of IM flirting as well. For instance, you'll want to avoid making lots of jokes at your own expense. Just one is plenty — it shouldn't be a recurring theme throughout your conversation. Doing this too often can quickly turn an otherwise flirtatious conversation into one in which you appear needy and self-loathing.  On the other hand, this isn't to say that you