2009 has been a busy year on the Microsoft Advertising Community blog as well as at Microsoft.  Microsoft Advertising has great resources for new and current advertisers who are advertising with adCenter.  Today, I am sharing my personal collection of resourceful links that covers information on essential resources, campaign management, keyword research & optimization tools as well as a list of insightful posts that I have categorized for you.  All optimization posts are from this calendar year (don't forget to bookmark this post for quick and easy future reference):

Microsoft adCenter: "The Essentials"

Informational Resources:

• adCenter Editorial Guidelines
• adCenter Learning Center (I highly recommend the tutorials)
• Microsoft adExcellence
• Microsoft Content Ads Information
• Microsoft Mobile Ads Information

adCenter Campaign Management:

• adCenter Desktop (available under adCenter FAQ's when logged into your account)

Keyword Research & Optimization Tools:

• Microsoft Advertising Intelligence (formerly adCenter Add-In for Excel)
• Microsoft adCenter Labs (great tools in beta)
• adCenter Keyword Research (must be logged into adCenter)

Campaign Management:

General Campaign Management:

• When Should You Optimize Your PPC Campaigns?
• The 9 Step Guide to Get Some Structure into Your PPC Life
• Five Tips to Improve your Microsoft adCenter ROI
• Managing Your adCenter PPC Budgets Effectively
• Why Microsoft adCenter - Research, Facts & Figures
• 3 Quick Tips to Improve Performance with adCenter Reporting
• FAQ on adCenter Conversion Tracking

Optimizing Ad Copy:

• Five Tips for Creating Successful PPC Ad Copy
• Optimizing Your Ads for Relevancy
• Troubleshooting Low Click-Through Rate (CTR) in adCenter

Keyword & Parameter Insertion:

• Getting Creative with Dynamic Text in Your Ad Copy
• Using Dynamic Text in Your Search Ads

Negative Keywords:

• Researching Negative Keywords in adCenter

Editorial:

• Microsoft adCenter Editorial Guidelines: Get Your Ads Live Faster and Help Improve Performance
• Top 5 Reasons for Microsoft adCenter Editorial Disapprovals

adCenter Desktop:

• Importing 3rd Party Campaigns to Microsoft adCenter Desktop: Preparing Your Bulk Sheet (Part 1)
• Importing 3rd Party Campaigns to Microsoft adCenter Desktop: Import and Upload (Part 2)

Microsoft Advertising Intelligence Tutorials:

• From Keyword Expansions to Bid Proposals to Market Trends
• Using the Traffic and Demographic Tools for Market Trends
• Keyword Expansion with the adCenter Add-in (Beta)

Content Ads:

• Microsoft Content Ads: 5 New Best Practices

What are some of your favorite adCenter posts from the Community?  Please leave feedback on the list and provide posts I may have missed.  I will update the list and re-post in the future.  Thanks!