buckworks - 10:51 pm on Jan 30, 2010 (gmt 0)

start looking for alternatives

You should already be keeping an eye out for alternatives, as a matter of normal business smarts.

If there's an alternative out there that you think would be more profitable on your site(s), you should be testing it now.

It would be mildly interesting to know what AdSense's payout split might be, but for me the question that really matters is what will give the best overall return for the available ad space ... and my time.

The answer might be different on different sites.