WP Share It Now is an easy-to-use, newbie-friendly plugin that will allow you to finally send viral traffic to your blogs, increase your sales, and it will even build a responsive list for you. . The share widget contains a link to a landing page for instance, and is only accessible if the users shares it first.
It works in a very easy way…To put it simply, you only have to incentivize your visitors with a free offer and they will ‘pay’ you with a share in Google, Twitter or Google+.
This plugin comes with a lite version where the following options are not available to customize the objects created: General Settings Widget, Default Display, Enable Cookies, Scroll Show, Animation Speed and Audio.