Vizzit 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, Internet & Telecom and 80 other categories.
Vizzit is leading in Science, Social Sciences, Law & Government, Government and 8 other categories.
Yahoo Search Marketing Analytics is leading in most countries, including United States, Japan, Taiwan, Korea Republic and 30 other countries.
Vizzit is leading in Sweden and Romania.