You wrote:

Third, LOLOLOLOLOL is not the electronic representation of laughter. "LOL" is an acronym, standing for "Laughing Out Loud". Because people are used to repeating "Hahahahahahaha." I'm sure it seemed only natural to type "LOLOLOLOL" but that doesn't mean it makes sense.

Oh yes, it does. How does "hahahaha" make "more sense" than LOLOLOL? Psychologically, the repetition of the "ha's" is a manifestation of the inherent psychosis in our psyche, triggered when the brain fails to make any sense of what has just been said. And while LOL began as an acronym, it has become a word, the same way that DOS (as in Denial Of Service) has become a word. To be precise, LOL has become a laughter word, much as "ha" used to be a laughter word way back during the time of the Saxons, and only became "hahahaha" (repeated) after it has been internalized and subjected to the said psychosis. Ask any online chat veteran, and you will find out that LOL has been internalized into a word, and therefore can be treated as a repeating laughter word the same way "ha" has been internalized and is now naturally repeated during laughter. The "real meaning" of LOL is about as interesting as the etymology of "ha" in the kilogram edition of the Oxford Dictionary, that is to say, not at all. It is nothing but a historical footnote only pedants care about.

Now, about ROTFL, everybody and his neighbour's dog knows that extended ROTFL laughter more resembles my subject line (which in case you didn't realize stands for "Rolling On The Floor Laughing My Ass And Head Off And Picking It Up Again So It Won't Roll Away", as anybody who's been on online chats for more than 5 years knows) than any form of repetition. Unless the laugher happens to strike that psychosis mentioned above, which happens when you roll on the floor laughing out loud, in which case it becomes ROTFLOLOLOLOL. Which has a nice sound to it, as it rhymes with "rolling".

It's LOLOLOL, not some lame crap like LOLLOLLOLLOL. Any doctor would be able to tell you that the latter is likely to cause repetitive strain injuries and CTS, as well as stuttering when you laugh. It's LOLOLOL 'cos then it rolls better, just like real laughter should. If it doesn't roll, it's not a laugh!