Hello, Today one of my sites received 1400 visits and increasing according to GA from a website that is showing me a "500 internal server error". I find this very odd because my ads ctr and time on site from visits is normal like other days, it seems like genuine traffic but the site sending the traffic was down all the time? Nobody sends traffic for free, should I be concerned as this could be a strategy to kill my account or site? Thx in advance!!