Social sites that impact SEO

The following social sites have agreements with Google to share data that can then be used as social signals which impact search engine rankings: AllVoices Badoo Blogger Delicious Digg Diigo Disqus Echo Gigya Google+ Google Groups – Merging into +1 Hatena Livefyre Meetup Read It Later Reddit Screen Rant SodaHead TypePad VKontakte yaplog! Twitter – Twitter’s Google deal expired and has not been renewed. Google is still using Twitter to find relevant new content. Facebook – There are rumors of a Google and Facebook agreement but that has not been verified.