IBM-Lenovo deal creates new global PC player - Computer Business Review: "IBM will take an 18.9% stake in Beijing-based Lenovo under the terms of the agreement, which also sees Lenovo become the preferred supplier of PCs to IBM, and IBM becoming the preferred services and customer-financing provider to Lenovo"

Quid pro quo (Without any quid)? You scratch my back, I scratch yours.

I was under the impression that we moved on from "Barter system" of doing business towards a more "Currency" based economy.