Unless is a personalization engine. It lets you segment website visitors into audiences, show tailored versions of your web pages to each of those audiences, and subsequently measure success rates. This typically will increase your websites conversion rates and ad revenue. This plugin adds the Unless service to all your WordPress pages. Simply copy/paste the Account ID from your Unless dashboard into the input field and save settings. Important note: this version of the plug-in works from version 5 of Unless. If you are still on version 4, go to Unless.com to upgrade. You will be rewarded with many additional features and an even faster service.