Hercules Post Stats adds a meta box to your post edit screen that shows you real time details about how many words you have written in the post, how many you wrote this session, how much time total you have spent on the post, how long you have spent this session, and approximately how long it would take the average reader to read the post.
What do these stats do for me?
These stats are useful for blog writers when they are writing to know how productive they are being. It shows how many words you have written in this writing session, and how much time you have spent while also showing the total words and total writing time. In addition it shows you how long it would take the average reader to read the post.