2nd & 3rd teir engines, where are they syndicated?

[WFNoob]

Where are these 2nd/3rd tier search engines syndicated? I'm guessing most of them are on parked pages?

 

[Jon]

Yeah, that's pretty much 99% of their traffic sources. Also the ones that have affiliate programs generally payout per search.

 

[Adsense Loser]

Thats the problem with 3rd party PPC. The traffic can come from almost anywhere. But then again I havn't tried and 3rd party PPC engines.