fuck it i do it all the time, i do not care one bit if you find it annoying, but the reason i do it is because this is a damn message board, its not my english class where i have to focus on my grammer and puncuation.
I always use the three dots when i am thinking or at a lost of words, or i just simply want to change the subject of what i am writing and instead of hitting return button one time i hit the period button three times. "Big woop, wanna fight about it?" (family guy)
But in all seriousness quit thinking about stupid shit like this, it is extremly unimportant to your life. Please for the sake of ur self do NOT waste anymore of your short life wondering why people use three periods. Please?