US job moves: Yahoo, Twitter, Wal-Mart, Salesforce, WPP

Occasionally, you’ll see a post on a significant move by company
founders and CEOs but for the most part these pages will show you how to
make marketing (and the internet) better.

Today marks the first of a weekly digest of the most senior and
significant job moves from the past week in the US. After our UK contingency
launched their moves digest last week, we thought it was important that
we did the same. We all know that a change in who runs a company could
affect how we all do our business so we should cover it.

Every Friday morning, starting from today, come to us for the latest
in who’s flying in to shake things up and who’s shuffled off to parts