I purchased the Pro extension one year ago and I have not regretted it one day. It is not perfect but it does work on several sites that I visit on a regular basis and for that I am thankful. As to those who balk at paying for an extension for the browser, you can go to the website and input the url and use the service free. It takes time, talent and effort to produce and support an extension. I gladly pay for the software, apps and extensions I use. I ask those critics if you yourself work for free? Didn't think so.
Great extension, Thomas. Thank you!