All in all this add-on works great if there are just a few phone numbers on a web page. However, Click2Pop works much better than this add-on if you have multiple phone numbers on a web page. With the business I work for there are sometimes hundreds of phone numbers and when this happens, it create a substantial lag in navigating the web page and navigating to different tabs. Hopefully 8x8 can address this issue in a future version because this one is much smoother than Click2Pop.