On the right hand side of each hub, you will find the option of sharing on Facebook, Twitter, Pintrest and HubPages followers. If you feel the hub is useful and others should also read it, you can choose the above mentioned options. You just have to sign in the respective site. A 'Share' option will pop up and you can share it. You can even copy, paste the link or the url, to other sites or email the link to your friends.