Does Mashable really want to advertise in your footer for $1200 a month? The Mashable website footer scam is fooling websites into adding a footer at the bottom of their site which includes a Gmail address for people to contact. It starts with the supposed manager of Mashable e-mailing you to ask about paid footer ads on your website. Read on the find out more about this new scam. How much does one post from you cost? This is the subject line on three of the e-mails I’ve gotten involving this scam: How much does one post from you cost?…