It’s just a little comma, right? No biggie. Not like most people know the rules anyway!
If this is your attitude towards those pesky little punctuation marks, you might want to take a second glance. Punctuation does more than you might think to writing: it changes pace of reading, it offers sentence complexity and variety, and, probably most important, it clarifies meaning. But when you get punctuation wrong, you risk more than just having clunky sentences or a slightly confusing sentence. The reality is, you may completely change the meaning of the entire sentence.
Check out these now-famous examples of simple punctuation changes that change, well, everything about the sentence.