At present, there are a number of plugins for WordPress which improve your website. I find this Wordpress Plugin called Quoty, a free plugin which makes easier to share the selected text through the major social networks.
Are you looking for buildup your email list?
So how to get more subscribers ?
Do you have a blog? And also twitter account too. So why don’t you attract more twitter followers with your blog. By just Implementing recent Twitter activity in the sidebar . So how to display the latest tweets?