Some statistics results in Google Reader

I downloaded many users' broadcast feed in Google Reader. In a user feed, we can get what articles this user shared and in every article, there is a list of users who like this user. Therefore, we can use a bread-first-search crawl to crawl broadcast feed of all users who have show their preference in more than 1 articles.

I only crawl feeds of users who like Chinese article. After 1 week crawling, I only crawl down 12586 such users and 51690 Chinese articles.

I extract data about what user like what article, and the results show a user like 10 articles on average and a user share 8 articles on average.

Following are some results

users number : 12586

items number : 51690

like records number : 127616

share records number : 99937