Have you thought of adding an "Invite Friends or Family" button or link? I wanted to tell my parents and brothers and sisters about Fuelly, and searched every page of the site, but found no way to do this. I ended up just sending them an email with a link to the site and my username so that they could find my stats and add me when and if they sign up. This would make doing this a lot easier and drive membership in the site. Thanks.
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