Hey Basment Dweller don't stress cuzzie... I use some internet slang but LOL is pretty much it. Where I am in agreement with HR is that it often projects the short hand communicator, off the bat before knowing the person, as somewhat frivolous and lacking substance... an initial perception... off course the meaning stays the same therefore it cannot be said that such a perception is necessarily valid. Roughly, 30yo and older don't use it allot whilst the younger you go you get to stuff the 25yo don't understand... hey I said roughly, I got a sms once in full shorthand, all cool like. I was utterly perplexed as to its content or even its nature. When I phoned it was an older woman asking me to come to her house to service her equipment.

Interestingly - internet/cell phone shorthand will eventually change English, it's an unstoppable evolution