Stop any fake data sending visitors away - By default, Open WordPress Comment Links in New Tab/Window (add target=”_blank”) tab or window with: New Tab Redirect Plus.
Keep your visitors on your blog. UPDATE: due to usability issues I don't recommend using this plugin as some visitors are annoyed by creation of new tabs/windows.
This plugin Makes Visit Site Link in your admin screen open in new tab. When activated you will get Visit Site Link in the upper right of your admin screen on every page.