2012 has almost come and gone and, by all accounts – certainly in the social media space – it was a big year.

We had the social Olympic Games, a very social U.S. presidential election and, overall, social sharing increased by almost a full quarter (23 percent) on 2011.

Facebook saw a nice 18 percent growth bump, and Mark Zuckerberg’s platform now accounts for a heady 51 percent of all shares. Twitter is 55 percent bigger than it was this time last year, and tallies 15 percent of all sharing. Even email (+17 percent, 9 percent of shares) and good, old-fashioned printing (+32 percent, 8 percent of shares) were up in 2012.

So, I guess the big question is: did anything go down?

Yep, both MySpace (-62 percent) and Delicious (-57 percent) fell in the past twelve months, and Google+ saw a net gain of just 12 percent.

The crowd-pleasing Reddit (+110 percent) and, of course, Pinterest (an incredible +379,559 percent) bagged the biggest gains of the year.

These statistics (and a whole lot more) can be found in this infographic courtesy of those nice folks at AddThis, whose social sharing functionality is now in use on more than 14 million websites.

(Source: AddThis.)