The nopCommerce engine is a bit out dated in some aspects in regards to SEO Optimization. This will be the first of a couple articles on how to correct and address these issues.
The Robots.txt will create some red flags if you run your nopCommerce site through SEOMOZ to rate your site as it fits in with the google search algorithm. Here is how you can fix it and why it is wrong.
This is out dated in terms of telling the engine how to handle