most people obsess over bid strategies, ad copy, and landing pages. But the real budget bleeders are the quiet ones-the settings you tick once and never revisit. Broad match without tight negatives? That's a slow leak. Conversion tracking that's importing the wrong event? that's a hole in the hull you won't notice until the ship's listing. And attribution models? If you're still using last-click in a world of multi-touch journeys, you're basically paying for the final handshake while ignoring the ninety-nine introductions.
but the one that gets me every time: search partners. It looks like a harmless toggle. You assume more reach is better. Then you wonder why your click-through rates tank and leads smell vaguely of unrelated queries. I've seen campaigns burn a third of daily spend on partner traffic that converts at a fraction of the quality-all because nobody unticked that box. It's easy to ignore when you're staring at the big levers. But that little switch can quietly reshape your entire campaign's behaviour.
So what's the one setting you learned the hard way to double-check? The one that seems minor but, left alone, quietly torches your budget?
