As shown in the demo video and explained in the thread previously, yes, the user needs to click on your site to get Like Jacked. This isn't an autojacker. The most common way of making sure they click on your site is to use the 'pop-up' box option which is a plain, grey, innocent looking pop-up that contains content that you can enter in the Jacker settings. The pop-up appears within 2 seconds of your visitor arriving at your site and the only option they have is to close the pop-up. As soon as they click to close it they are Like Jacked.
We have found that putting a simple message of 'welcome to the site' works fine or you could place your sites cookie usage policy in there.
Thanks,
Shez