Many large sites have nearly 100% direct traffic and this is completely irrelevant to getting an account banned. However, it is a valid reason for why your account may get inspected/flagged, but if it turns out okay - then you'll be okay.
Dude.. let me tell u a little thing. Google has been so stricken in the past few months. Google need those publishers, who can provide customers to their advertisers, not users to their advertisers. Remember, there is a big difference b/w advertiser & user
no-referer traffic looks like from bookmark, if not many of them, then 100% nature but if almost all your traffic from no-referer, that's cheating by no-referer cloaking traffic which will place your adsense account in danger IMHO, no-referer traffic should not more than 20%
Thank you, are you in this area of business to? Pm me if you all, i would love to discuss it with people in the same area as i am now. Share tips, advices etc.