During the infancy of the World Wide Web, when people had more time and email was a genuine novelty, "Click here" was a darned good call-to-action (CTA). It was simple, direct and easily understood by the greenest newbie online.

Fast forward 15 years or so. Using a conversion mechanism that is approaching middle age in internet years is like using a 14K dial-up modem: not exactly highest tech. If your conversion rates are stuck at single digits, try these tips to bring your CTAs up to 21st century speed.