MSN Ads is leading in Top 10K Sites and Top 100K Sites.
Shopzilla has better usage coverage in more websites categories. Including Shopping, Arts & Entertainment, Business & Industry, Clothing and 84 other categories.
MSN Ads is leading in People & Society, News & Media, Computer & Electronics, Music & Audio and 52 other categories.
MSN Ads is leading in most countries, including India, Germany, Brazil, Australia and 22 other countries.
Shopzilla is leading in United States, Russia, Canada, United Kingdom and 20 other countries.