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.
It works in a very easy way ! To put it simply, you only have to incentive your visitors with a free offer and they will "pay" you with a share in Google, Twitter or Google+.
Proven to increase traffic and increase sales (if you are able to offer discounts and coupons for only one share, people will do it over and over again. This means an increased business for you. >