Take note, marketers. Tweaks to Facebook's News Feed algorithm seem to be working. From June 2013 to June 2014, Facebook drove 23.4% of social referrals across the web. Pinterest trailed at a distant second at 5.7%. Twitter, at 1%, came in third place, beating the combined referrals from StumbleUpon, Reddit, YouTube, LinkedIn, and Google Plus, according to content discovery company Shareaholic. Within the past year, Facebook's traffic referral share increased 14 percentage points. Pinterest and StumbleUpon were the two other networks that saw a gain at 2.34 percentage points and 0.07 percentage points, respectively. The rest of the networks highlighted in this study all experienced losses. Get the full story at Fast Company