[Alpha_mybb_import13563]

If you don't have grammer, I don't think you'll be taken sirius-ly (I know ) Although I guess not as you can be smart Mathmatically with no use of grammer

Many people don't take me siriusly when I'm not using grammar Idk why

Because it's maybe not coherent therefore they can't read it siriusly

[-Wolf-]

For sure you do not need good grammar.

[Natsu]

Intelligence can be used in different ways people are smart at certain things and less smart at others. you don't need grammar to have knowledge in a certain subject. So no.

[Krados]

Doesn't really have anything to do with it, but it's a better way of enhancing your typing and making it easily eligible to read rather than having bad grammar that no one can really understand. It simply makes you sound like that you care about your appearance and it makes you sound more mature though.