Is looking for sites to to media buys a waste of time?

What are the best methods to finding websites depending on their level of traffic?

Like 10-50k, 50-100k, 100-250k and so on...

I'll look into the Google Adwords account mentioned.
 


In my experience, the webmasters that are hard to get a hold of are a pain in the ass to deal with once you do, which is really too bad because a lot of those guys could be monetizing their traffic infinitely better if only they'd get a clue.

I've seen the same thing on the CN where I created two different campaigns; one with managed placements and one with automatic placements with the same goal of getting ads on 'site x'. Same ads, same domains, etc., but in some instances I'll get 0 impressions via managed placements and shitloads of impressions via auto placements. It's bizarre.

I seem to remember (as a publisher) there was some setting in adsense to allow or deny direct placements, and so I had assumed that's what was going on (publishers weren't allowing placements), but now that I look through my own adsense account I can't find the setting.
 
Actually, now that I posted the previous, I found where in adsense you allow placements. It's done through ad channels and is not enabled by default. I guess that explains why you can't get impressions on certain sites via managed placements... unless I'm missing something else...
 
In my experience, the webmasters that are hard to get a hold of are a pain in the ass to deal with once you do

Yeah thats what I'm sayin. Cause how are they gonna manage your ads/rotations and whatsoever if they're out fuckin' around never respondin to emails in the first place? It sucks cause if they would, they would be a DAMN good traffic source.