Definition of a Twitter Replies
The definition of what a Twitter reply is.
A Twitter reply is when someone mentions you on twitter in reply to a specific tweet (post) you posted. They do this by clicking the reply icon (an arrow) on your tweet.
In our weekly stats email we count this as all replies your tweets have received for that week.
The example below is a tweet, near the bottom right you can see a reply icon (an arrow) which would be used to make a reply to this tweet.