After Yahoo and MSN keyword search merged in November 2010, Microsoft adCenter became the second largest paid search program behind Google adwords.

Like many of us are using Google Analytics to track visitors behavor and they don’t have MSN adcenter tracking info for you, so you need to do some tricks in order to make your life easier.

1. You need to  use Google URL Builder , make sure you get the Campaign Source as i put “MSN” and Medium as i put “cpc” correct and your original Website URL correctly. 
Then click Generate URL.

2. Copy the URL from Google URL bulider and then go to MSN adCenter and past the link at your compaigns.

3. Wait at least 48 hours, if someone come from MSN adCenter then will see it on Google analytics.