Mr. Rewrite has presented an everyday/every day error every week for some time now. He's proud to offer this week's example in full multimedia magnificence.
For the record, Mr. Rewrite would consider stopping for a flu shot every day (adv.), not everyday (adj.). But it's probably not a good idea to have more than one.
It takes a special kind of crazy to stand like an idiot when it's 109 degrees, waiting for a botched marquee to change displays. But Mr. Rewrite is more than willing to do that every day for you, gentle reader.