[dTal]

I don't think it's likely to have been "planned" deliberately, as the result is an annoyed user. I think it's the result of naive A/B testing, without examining the deeper reasons for the results. "Oh wow, clicks are up 50% with the new layout!"

Of course, if you did discover the true reason for the increase in your click rates, you'd probably stay quiet about it. So maybe it's a bit of both.

[megy]

It might be the result of developing it on a fast internet connection in the office where the ad loads up straight away.