I can't answer for jsavimbi, but I think it insults the audience because it takes the easy way out. It would be like not proofreading your slides and showing up

I can't answer for jsavimbi, but I think it insults the audience because it takes the easy way out. It would be like not proofreading your slides and showing up with typos or txt abbrs rather than well-thought out phrases. Swearing works in private conversation for the same reason that other slang and spoken shortcuts work, and it works in casual written conversation for the same reason that abbreviations, shorthand, and inattention to capitalization, spelling, and punctuation work: there's no real expectation of quality. Sure it's lazy and shows a lack of caring, but if a friend is shooting me an email to ask if I'm up for Thai tonight, I don't expect her to proofread and capitalize before sending. That's an appropriate amount of effort for the situation. If you're putting that much effort into a presentation to someone you hope will give you money, however, that's just plain rude. (Some folks, and I suspect this is true for HN commenters at a much higher proportion than it is true for the general population, prefer to spend the time on all communication, regardless of formality or venue, to make it decent. I believe this is a good habit to cultivate, but I don't insist upon it in others).