Why Follow Buttons Needed.
You are thinking how blog traffic increase by following?. The proper answer of this question is ----> By following you can able to increase you blog traffic, by the help of your news feeds, when you are sharing any posts form your blog to your timeline that time your followers and friends can get news feeds on their home page or timeline, if your post is informative than your friends and follower will visit your blog you will increasing your traffic.
Horizontal Social Follow Buttons.
How to Add Widget to Blogger.[Note:Before Saving the Widget You Have to Certain Change on That Code.- Change find userid on code and replace all userid with your id.]
To add widgets on your blog click on below link and follow the steps, and add widget to your blog. How to add Social Follow Buttons to Your Blogs.