AddThis does not have any rules about where you place the button. You can put it where ever you want, but we do have some suggestions to help you increase sharing and engagement:
Do's• Pick a prominent position
• Keep AddThis near the top of the page
• Place sharing near the content being shared
• Use personalization with service icons
Dont's• Don't put sharing in the navigation
• Avoid putting sharing in the footer
• Avoid putting sharing below the fold
• The sidebar is not optimal for sharing
Examples of Successful Sharing
Here are some more examples of sites that have followed some best practices. Hopefully they can give you some ideas and inspiration.
Optimize AddThis Script to Load Faster
<HEAD></HEAD> of your web page. This way, the AddThis script is only loaded once.