[darrikmazey]

I don't know anything about the poster or his relationship to Zuckerberg, but there is probably a built-in alert for mentions of Zuckerberg. Else unless they're friends, how would he see this within 6 minutes? If I had a Facebook account, I'd append "Zuckerberg" to every post, just to dilute the signal with a little noise.

[joshuamerrill]

The first person who responded to the post works at Facebook and is a friend of Zuckerberg's, therefore, it would have appeared on his News Ticker.

Mark Zuckerberg is mentioned far, far too many times on Facebook every day to track each reply.

[JereCoh]

Correct. I am friends with Kelly, who works at Facebook and is friends with Mark. She replied. Her activity on my status update would have made it appear in his newsfeed.

[joshuamerrill]

Still, the "Zuck sees all" explanation is far more colorful. :-)

[gibybo]

Kelly and Jeremiah appear to be friends. Kelly works at Facebook and explained she had Mark's stories in her feed, so it seems reasonable she is friends with Mark and he found out that way?

EDIT: Err, I'm a bit late I guess :/

[matdwyer]

OK I HIGHLY doubt that Mark has time to go through every tag with his name in it. That would still be thousands and thousands every day...

Being on "Facebook" with your friends is one thing, but sitting there and monitoring any update with his name is way out in left field

[notatoad]

nobody says he sits there monitoring any update with his name in it. just that he probably has a system set up that allows him to monitor it should he choose to.

[mcantor]

If they're not Facebook friends, how did Mark post his reply?

[ltamake]

Subscriptions?

Plus, he's Mark Zuckerberg.

[gibybo]

It's a public post, anyone with a Facebook account can reply.