The Proper Use of Serial Commas

Ha! As this site asserts, I've always been right!

About what? You do put a comma after the item that precedes "and" in a list, like so:

John bought eggs, fish, chicken, and a sandal.

Journalistic guidelines say otherwise, but as the site above says, they're wrong. Journalism is untrustworthy these days anyway.

So, take that, Jim!