I in fact agree, I don't specifically use the abbreviations of Internet slang, instead, I type out the whole word(s), it really isn't a hassle, just some extra work. I found it more better to be formal then to use slang.
"Lol" Has been overused to much, and your right Darklink. I don't use "lol", and the person thinks I'm upset or are enraged at them. It's completely stupid, if you really think about it, "lol" is like overrated in my opinion.