the super-low cost is accomplished through a combination of several factors:
using content network & image ads
getting traffic from 3rd world countries
using thousands of random keywords
all of these factors decrease the targetedness of the traffic to the point where you're pretty much buying garbage clicks from people who:
aren't interested in your product
can't read english
don't own a credit card
of course the low quality is balanced by the fact that it's really cheap. the real question is - is this traffic still higher quality than $0.01 cent clicks brought from other 2nd tier search engines?
since it IS adwords, i think it's still worth experimenting with
also, the guide says you shouldn't direct link because google might ban you. imo direct linking would never work with this kind of traffic in the first place due to the fact that it's ridiculously untargeted. you'd almost certainly need a pretty epic presell page to pull conversions out of traffic like this.
80% of the world makes under $10 per day. i'd love to see the presell page that can sell a $97 teeth whitening kit to one of these people
the clicks are 1 cent because you're scraping from the bottom of the barrel
