Have you ever heard about that a good design for me may not be for 10 000 new clients, even though was good for my existent 1000 clients? To test that is very simple to get an answer. The well known method with a top 5 competitors that sell same thing is the way to find out if your site converts well enough or not. Don't go to your data because 70-80% of them will probably tell you that your site looks good and they are pleased about it. Get this random questions on new clients to see either your website is decrepit.
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