I've had used trafficz and domainsposor. The RPM(rate per miles) decreased dramatical. Now I hardly get 5-10$ RPM. In the old times was even more then 25$ RPM.
I'm looking for an alternative way of monetize them.
I also made a test by redirecting them to some PPS sponsor, after +5k visitors, got no sales so I switched back to parking

I also know that my traffic its not very good, its not making many sales, so a blog with RSS from PPS sponsors will not work good either.
Any other ideas?