Performable
41 websites

Performable offers both free and paid options

http://www.performable.com/

Hi,1. You can keep track of various items of itnreest by using RSS feeds but2. It may be easier to make bookmarks if you put Dates in their Name (and with TAGS or useful FolderNames) you can review and delete obsolete items3. You can Sav...

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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.

Market Share by Top Websites

1 Tell-a-Friend is leading in Top 100K Sites and Top 1M Sites.

2 In terms of market share, Performable is clearly lagging behind, losing to Tell-a-Friend 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 14 other categories.

2 Performable is leading in Business & Consumer Services, Heavy Industry & Engineering and Pets & Animals.

Geography

1 Tell-a-Friend is leading in most countries, including United States, India, United Kingdom, Canada and 40 other countries.

2 Performable is leading in China, Estonia, Japan and Netherlands.