Jamie Smith tells marketers how to double their campaign's click-through rate with a scientific AdWords A/B test on ad copy. He walks through updating ad copy optimization settings, writing ad copy ...

Opinions expressed by Entrepreneur contributors are their own. Scientists would never push a drug to market without testing it to make sure it is effective; a similar principle should be applied to ...

It can be incredibly frustrating not knowing why your website is underperforming. You did the keyword research and implemented all the best practices, yet your website isn’t producing the results you ...

I think it's safe to say that by about 2010, email marketing was a full-fledged marketing tactic. If your business wasn't using it to engage with consumers, then you may have been missing out on ...

Mark Sanderson receives funding from Microsoft Research and has previously received funding from Google. The market testing that helped give us the Google search we know today is being emulated by ...