While Facebook would no doubt like to see every man, woman and child over the age of 13 sign up for an account, a recent report claims that in the U.S., at least, the site is actually shrinking.

According to a report by Inside Facebook, the site now has 687 million users worldwide. But most of that growth has come from countries like Brazil, where it has yet to penetrate. In the U.S., the number of users has declined by 6 million (more than the entire population of Denmark), while in Canada, the number of users has dropped by 1.5 million.

Most surprising, however, is that the decline occurred over the course of a single month, May, when the number of users in the U.S. fell from 155.2 million to 149.4 million.

Nevertheless, it is still way too early to write the website’s epitaph. While Facebook may have lost some of its excitement to veterans, it still has a user base roughly equal to half the population of the U.S.  and over half the population of Canada. It may have reached a saturation point, leaving it nowhere to grow … except in untapped places like Brazil, because worldwide, the site is still growing.

Read More at NBC Bay Area.