I think most of us are always focusing on Google Adevertising for PPC.Here I want to set you focus on Microsoft AdCenter.I do this because of I get some beneficial results of it.The inportant points which I want to mention for the adcenter are:

AdCenter Desktop Editor
Client/Agency Relationships
Search Query Performance Report
AdCenter Blog
Tasks can be automated (scripted)
Provides Web user interface applications and desktop applications