lgn1 - 7:46 pm on Mar 25, 2009 (gmt 0)

If it takes a year to be kicked out, then just monitor it, and pay the $300 reinclusion fee, to get back in. Repeat as required. This reduces your yearly cost to $150.

Frankly, unless you are in a category that only has one page of results (has PR), then YAHOO is a waste of time. From my experience, the trust factor must now plays only a very small role in the Google search alg.