There are 955 million active users on Facebook -- and not all of them are in their teens or 20s. The fastest-growing demographic on the service, for at least the last two years, has been women over 55.
[More from Mashable: Young Job Seekers Prefer Working at Startups [STUDY]]
And with that in mind, we invite you to meet the delightful Florence Detlor, 101 years young. According to Facebook, she has the distinction of being the service's oldest user. She's also the oldest person to visit Facebook HQ, where she met with COO Sheryl Sandberg, along with a guy young enough to be her great-grandchild: Mark Zuckerberg, CEO and founder.
Sandberg posted the above picture on her Timeline early Monday, along with the caption: "Honored to meet Florence Detlor, who at 101 years old is the oldest registered Facebook user. Thank you for visiting us Florence!"
[More from Mashable: How to Complain About Your Boss on Facebook and Not Get Fired]
The photo has garnered more than 5,000 Likes -- and comments from users with 102 and 103-year-old grandparents, both eyeing Florence's title.
According to her profile, Florence graduated from Occidental College in 1932. She lives in Menlo Park -- coincidentally enough, where Facebook is now headquartered -- and is "looking for a good book to read." She joined Facebook three years ago this month, in August 2009.
Bonus: check out the sights of Facebook HQ, where Florence just got a tour.
Facebook HQ. You Like This
The company is now completely moved out of its Palo Alto pad, and into the much more spacious Menlo Park facility it broke ground on last year.
This story originally published on Mashable here.