DM Review: Building a Foundation for Data Quality Success

In the latest newsletter DM Review has a good article by Bob Haganau about Data Quality Success.  I encourage everybody to read it.
I have focused a lot on the GIGO - Garbage In - Garbage Out problem, which is a initial cleansing issue.  In this artice Mr. Haganau also focus on the ongoing prevention:
just when one marketing database is cleaned up, a new campaign brings in all-new leads. As soon as one system migration [...]