Jetpack has many great features, including Sharing module to add popular social sharing buttons such as Facebook, Google Plus, Twitter, Pinterest and few more to every post on your site. Adding those buttons will make it easier for your readers to share your article to their social network, thus better exposure to your article.
In other social sharing plugins such as DiggDigg and Sharebar, you’ll be able to insert your Twitter handle at the end of the article. However, in Jetpack, there’s no setting to add your Twitter handle.
Using the code above, you can add your Twitter handle after the tweet when someone clicks on the Twitter sharing button on your post. Please change the word WPFeed with your own username.
Here’s what you’ll see. The filter will add
via @yourusername to the end of the tweet.