This is false. I have personally configured Varnish to power blogs, marketplace websites, and a Magento powered E-commerce store. If you've worked with Magento

This is false. I have personally configured Varnish to power blogs, marketplace websites, and a Magento powered E-commerce store. If you've worked with Magento then you know it relies heavily on cookies and sessions. Even with all difficulties of modifying Magento I was able configure Magento and Varnish to work together perfectly within a week. I can point you to the Magento site running with Varnish if you send me an email.