TruEffect is leading in Top 100K Sites and Top 1M Sites.
Yahoo Search Marketing Analytics has better usage coverage in more websites categories. Including Business & Industry, Shopping, Arts & Entertainment, Health and 77 other categories.
TruEffect is leading in News & Media, TV & Video, Philanthropy, Games and 7 other categories.
Yahoo Search Marketing Analytics is leading in most countries, including Japan, United States, South Korea, Taiwan and 36 other countries.
TruEffect is leading in Tuvalu, United Arab Emirates, Bermuda, Belgium and 3 other countries.