Good Extension - Bad AD's Rated 3 out of 5 stars
The developer said it includes " "Discover Similar Sites" and "Price Comparison". It does not tell you these show as scripted AD's. The AD's show as a rectangle box containing several product options that are similar to any product you are viewing on the web page.
So "Discover Similar Sites" and "Price Comparison" is an AD pop-up because it "advertises" online products to purchase. I believe the developer needs to re-word his description if he wants to be truly transparent.
The AD pop-up is removed when you click the small down arrow on the Capture button in the top bar, you will see the word "options", click that, an options dialogue box opens, then uncheck "Enable similar product search powered by Superfish", which I found was enabled by default, contrary to developers claim it is disabled by default. Reload the page or clear the cache and reload.
Apart from that small annoyance, it is a good extension.