Extensive use of emojis and abbreviations is a good indicator.
I wish this were true, but not really. I’ve seen 40+ year olds doing exactly this. Why, you may ask? They grew up with Nokia phones.
Conversely, excessive use of grammar in casual Internet discourse indicates a tight-arse
My fellow internaut, I am keenly afraid I will have to disagree. Some of us old folks were raised by less than stellar parents that whacked our knuckles whenever they detected a minimum deviation of perfect grammar.
The wake of the ordeal stuck with us forever.
Ok, more seriously: you type how you type, and as long as you are not trying to impose your own rules on others, you should be fine.
having said that i despise the total lack of punctuation drives me really really nuts why cant you use at least commas periods and question marks you fucks