As we reported here before, referral traffic from Pinterest is rising fast. Today, Shareaholic released January 2012 referral traffic numbers that pin that number where it belongs.

It turns out, in the month of January, Pinterest referral traffic was greater than referral traffic from YouTube. And from Reddit. And from Google Plus. All combined.

Witness.

More on Pinterest:

Video: How To Use Pinterest (Tutorial)

Pinterest 101: How Can Geeks Use It?

Pinterest Invasion by Men Continues Unabated

Pinterest Top Five Most Repinned Items

Pinterest Traffic Spikes

Dear Pinterest: Can We Talk?