I use the epicurious site and various other recipe sites, including chowhound. I find it helpful and instructive to read the comments of others who have previously made the recipe and the ways that they would change that recipe to improve the result (the next time).
I am surprised however to read posts and comments from people who do not make the thing as written and then give comments based on the changes they were 'forced' to make as a result of not having the ingredients.."I had to substitute X for Y or I made it this way to reduce fat or I don't like cabbage so I added chocolate chips.
How is that helpful and what does it say about the original recipe? Nothing.