New data has revealed that while Facebook still commands the lion’s share of the worldwide social sign-in space, it’s Google that has made the biggest gains over the past year, largely at Twitter’s expense.

While Facebook had a 54 percent share of all social sign-in buttons across websites in Q3 of 2012, it’s dipped back down to less than half (46 percent) in Q1 of 2013, reports Janrain in their April 2013 report.

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