It's a good strategy, Obama is going to have a more money to spend, so he's going to be able to dominate the media.
Doing town halls with McCain gives McCain free air time, and having Obama on the show would give it huge ratings, it would lessen the impact of Obama's fund raising edge.
Let McCain do his coffees and his rotary club luncheons, why give him that kind of exposure?

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“ The subjects of every state ought to contribute towards the support of the government, as nearly as possible, in proportion to their respective abilities; that is, in proportion to the revenue which they respectively enjoy under the protection of the state.”

Adam Smith , The Wealth of Nations 1776

"We have always known that heedless self-interest was bad morals; we know now that it is bad economics"
FDR's second Inaugural Address