I was never a fan of "LOL", "lols", "lolz", or "lawl".
I very much prefer the traditional "Haha" (does that surprise you?), where the number of ha's is a function of how funny the conversation is. I tend to cap out at four, i.e. "Hahahaha".
Of course, this interjection can be augmented with exclaimation marks or emoticons, which adds value to the quality of the "ha". Typical use of "haha" can be substituted by either a "Heh" or a "Hah", depending on the situation; it is more of a heartfelt silent chuckle than a simple "haha" can actually convey. The two ha case, i.e. "haha", is reserved for the general case (used like "lol" for other people), when there isn't any actual laughter to be had. For the most part, "Hahahaha" trumps "Hah" or "Hah", which in turn is more meaningful than the ordinary "haha".
This concludes a brief study of hahas and hohos.
