That's hard to analyse, however web traffic follows a power law distribution, http://www.hpl.hp.com/research/idl/papers/ranking/adamicglottometrics.pdf http://w

That's hard to analyse, however web traffic follows a power law distribution, http://www.hpl.hp.com/research/idl/papers/ranking/adamicglottometrics.pdf http://www.hpl.hp.com/research/idl/papers/ranking/adamicglot.... So, outside the top 100k sites in terms of traffic you could expect it's either parked or idle domains.