Learning social media lingo

"You know that smiley - the colon-bracket one.." "Yes!" I said proudly. "I have mastered its use." "Actually, you know, it is not meant to be used as a period. You do not need to put it in after every sentence." "I don't put it in after every sentence", I said indignantly. "I also use that colon-P thing every now and then." "Exactly what I mean. It is perfectly OK to write sentences in Social