Low Quality Traffic bad for you

[endomorph1]

I read on another thread -

I learned that a mix of low quality - high quality sites running off a single AdSense account can actually lower the overall EPC across the account

How true is this?

Is it worth my while taking A/S units off poor performing pages?

[jetteroheller]

The evidence was found in an other thread, some days ago. My interpreation of this thread:

Publisher A had the strange idea to pay $120 to publisher B by letting him put his AdSense code on his site.

A had usual $40 a day.

B was surprised to get much less.

It was found out, that B uses strange tricks resulting in an extrem low EPC caused by smart pricing.

So the extrem smart pricing discount of B lowered the stats of site A, as soon as the publisher code of B was used.