Seth Godin has a link to new data from MarketingVox that simply blows my mind. In fact, I cannot imagine this is possible. The basic point is that two sites, Yahoo and MySpace, account for 53% of all display impressions. That’s simply astonishing. The question this begs for me is whether you’re better off trying to compete for space amongst all that noise, or if you’re better served looking for more niche opportunities for display. Do users on those sites tune out due to constant exposure? Something worth keeping an eye on, I would think.