You know that a website is an essential part of your business's ability to attract and retain customers. And chances are you've got a site up and running, and you're confident that you've checked off that item on the must-haves list for your business.But how much do you know aboutwhyyou need your site? Even more important, is your website doing all it can to create customers for you, or is it merely a stale set of pages sitting dormant in a tiny corner of the internet?Here is a tool that will help you find out.The Marketing Grader by Hubspotis simple to use, and will rank your website on a scale of 0 to 100 in just a few seconds. Just enter your website URL (www.myfilmshop.com, for example), and you'll get a free analysis of your site's performance across a wide range of criteria. By entering your email address (optional), you'll receive offers from HubSpot on their internet marketing products.Whatever condition your website is in, the Marketing Grader is a great way to learn what makes a website truly effective, and what you can do to improve your site's performance.