发现一些与分享url有关的api接口，记录下
Facebook - http://graph.facebook.com/?ids=http://www.seomoz.org
Twitter - http://urls.api.twitter.com/1/urls/count.json?url=http://www.seomoz.org
Linkedin - http://www.linkedin.com/cws/share-count?url=http://www.seomoz.org
Stumbleupon - http://www.stumbleupon.com/services/1.01/badge.getinfo?url=http://www.seomoz.org
Delicious - http://feeds.delicious.com/v2/json/urlinfo/data?url=http://www.seomoz.org
Google Buzz - https://www.googleapis.com/buzz/v1/activities/count?alt=json&url=http://www.seomoz.org
Reddit - http://www.reddit.com/api/info.json?url=http://www.seomoz.org
参考资料：
1、Seo blog：http://www.seomoz.org/blog/how-to-track-your-social-media-strategy