Tell-a-Friend
275 websites

Tell-a-Friend is free to use

http://tellafriend.socialtwist.com/

SocialTwist is a customer acquisition and retention platform that generates viral referrals for businesses, using the social connections of their customers.

VS

Think Realtime
10,155 websites

Think Realtime costs money

http://www.thinkrealtime.com/

The worlds most advanced real time advertising. Industry leaders work with Think Realtime.

Market Share by Top Websites

1 Think Realtime is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Tell-a-Friend is clearly lagging behind, losing to Think Realtime in all segments.

Websites Categories

1 Tell-a-Friend has better usage coverage in more websites categories. Including Science & Education, Arts & Entertainment, Community & Society, Computers Electronics & Technology and 16 other categories.

2 Think Realtime is leading in Vehicles and Pets & Animals.

Geography

1 Think Realtime is leading in most countries, including United States, Canada, Philippines, Kenya and 45 other countries.

2 Tell-a-Friend is leading in India, France, Italy, Belgium and 17 other countries.