irregardless is not a word. You're and your are not interchangeable. it's spelled 'definitely'. punctuation is not always required. do not change nouns into verbs; for instance, one can not "medal" at the Olympics. one can win a medal, take home a medal, earn a medal, even steal a medal. if you really did medal, it would be spelled 'meddle'. and that's not very nice either. oh, and i should point out that no acronyms need to be apostrophized, even ones that are plural.