Actually advertisers have known this since a long time. Ugly wins more attention. More attention = higher conversion.
The first job of ads is winning attention. You have to fight against all the clutter and stand out. You can do so by a variety of tactics. Use human faces. Use cute looking models. Use ugly fonts or clipart. Use mouse pointers. Use fluorescent colors. Use dashed coupon type borders.
You need to know however that while your conversion rates will increase, the number of complaints you receive will increase too.
The most over-the-top-ugly banner ad I've seen was a "Would you like to go back to school on a grant?" ad targeting women. It had a cartoon woman in a superhero costume with a blinking siren pasted (seemingly) randomly on her head.
No, but my mom probably would have, and it got my attention enough to where I can describe it precisely _and_ still remember what it was advertising, though the image and the product have nothing in common. Woah.
The first job of ads is winning attention. You have to fight against all the clutter and stand out. You can do so by a variety of tactics. Use human faces. Use cute looking models. Use ugly fonts or clipart. Use mouse pointers. Use fluorescent colors. Use dashed coupon type borders.
You need to know however that while your conversion rates will increase, the number of complaints you receive will increase too.