of online users across 365,000 websites of identities people prefer both for sign-in and content sharing by Janrain.
Facebook is the most popular option for 42% of online users, though a majority use a different social identity, such as Google, Yahoo! or Twitter. Facebook’s share of social logins has increased over the past two years, mostly at the expense of Google ...
On media websites, Yahoo! and Google are running strong as the second and third most popular providers. Despite a modest decline over the past two quarters, Yahoo! continues to perform best in this vertical.
People are sharing comments, purchases, reviews and other content from the web to their social networks more than ever, says the report. Facebook and Twitter are far and away the most popular sharing destinations, but Yahoo!, LinkedIn and MySpace maintain preference on niche sites that are catered to their audience (B2B sites for LinkedIn and music sites for MySpace).
via / more at mediapost.com