I regularly (a lot) make the above cookie recipe from epicurious (I double the chips, using ones I chop myself from bittersweet chocolate and 1/2 the size of each cookie).
The issue that confuses me when I read recipe comments is, how is possible that someone will review a recipe after substantially changing it - add an egg, leave out the cocoa. How is that valuable? It's fine and helpful to talk about what one has done to a recipe but not to use that as a basis for rating the original recipe. Agree?