When I'm on the internet I generally don't worry too much about how other people write. I do get really irritated by colleagues who insist that spelling and grammar aren't important in the workplace. Good communication depends on accuracy and poor spelling and grammar can easily confuse the reader. I've noticed that my standards have been slipping recently and I've been using there instead of both they're and their and my to, too and twos have gone awry. However, one thing I won't apologise for is my English spelling, as in apologise and counsellor.