On grammar and typing, an addendum.
I've been surrounded by computers all my life. I was first using them when I was like, 4. I was trying to make HTML pages when I was 11. I did computer classes in high school, which involved learning to write emails, to be a good at desk-job things.
Generally speaking, I've just had a lot of practice at Writing Good online. My gripes with people that can't (or actively choose not to) write professionally is perhaps simply because they grew up without the same education or time investment as me.
On grammar and typing, an addendum.
@Taylor Big same. Sometimes I get a little lazy, but I never go out of my way to talk in l33t speak or with copious emojis unless I'm being ironic. Generally, the longer my post the more attention I pay to grammar. And I *always* use correct spelling, as best I can.