What impact will the Yahoo/Google arrangement have

[HRB]

Greetings All,
If you haven't heard already Google and Yahoo established a joint advertising pact. The agreement enables Yahoo to run ads supplied by Google alongside Yahoo’s search results and on some of Yahoo's web properties in the United States and Canada.
What impact do you think this will have? Why do you feel this way?

Regards,
HRB

[HRB]

Greetings all,
Here's some great input I felt compelled to share.
Regards,
HRB

Pay close attention to your cost per click prices in Google.
Generally bid prices are lower on Yahoo than on Google;
once this program is implemented, ads on certain Yahoo queries
will be affixed with Google-like prices due to the auction
based system in place.

When the queries begin to marry each other,
start to pay close attention to which keywords
are triggering Yahoo search results and measure
your keyword performance and cost in each engine.

If you have duplicate campaigns in both Google
and Yahoo - then it is important to understand
how to measure performance in your reports so
you could possibly pause those keywords in Google
and have more flexibility with them in Yahoo alone.

[Niche]

I think this probably will have more of an impact on people who use PPC for advertising their site than on people who monetize their sites with adsense.

There is the risk of PPC via Yahoo going up in cost if they are allowing google ads on their sites.

Not sure what ranking criteria will be applied when displaying google ads on Yahoo.
The landing page relevance and ad age criteria in Google have allowed some low bid price ads to rank well with Google.

As Yahoo ranking seems to be mainly based on bid price, does this mean that the low bid high click ads that rank well in Google will have lower ranking in Yahoo?

A lot of questions that need clarification