For myself, I have to use grammer. I use what I'm taught.

On a forum though, I don't it is that important. I mean, if you want people to understand what you're saying, then it is wise to write as clearly as you can.

But for spelling errors, I don't care. As long as I know what they're trying to spell and say, then I bypass it.

It's the ones who don't use a period that annoys me. Like, it's one button. Quit being so lazy and use it at the end of a sentence.

Other than that, i could care less how people write.

I prefer to write properly because it shows that I do have braincells in my head.

It's also a good habit to get into. You go for job interviews later on in life, or you have to write and important letter to someone, you want to come off as bright. Not having spelling mistakes and bad grammer. Then you look well, stupid.

Kind of on here too. You can't spell or type out a sentence, you're in a heap of trouble for the future, plus you don't come off as looking too intelligent either.