1
Tell-a-Friend is leading in Top 1M Sites and The Entire Web.
2
Questback is leading in Top 100K Sites.
1
Tell-a-Friend has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Business & Industry, Internet & Telecom and 190 other categories.
2
Questback is leading in Science, Social Sciences, File Sharing, Newspapers and 2 other categories.
1
Tell-a-Friend is leading in most countries, including United States, India, United Kingdom, Indonesia and 98 other countries.
2
Questback is leading in Sweden, Norway, Denmark, Finland and 2 other countries.