Pinterest has been exploding. According to comScore, Pinterest drew 11.7 million unique monthly visitors in January, making it the third-fastest-growing website since December. By comScore's measurement methods, Pinterest became the fastest independent website ever to hit 10 million unique monthly visitors.
According to content-sharing firm Shareaholic, Pinterest drove 3.6% of all Web traffic referrals to other sites in January, more than Google+, LinkedIn and YouTube combined. Pinterest placed just behind Twitter for fourth place on that traffic referral list, with Facebook No. 1 at 26.4%.