Dave, the one you refer to was hub of the day a few days ago. What HP does is have the hubs of the day linked together on their homepage. When you go to the HP homepage you will see something like a screen roll for the hubs of the day. So maybe you saw Matt's hub there, There is a scroll button there where you can scroll through to find a particular hub of he day.
The hub displayed in your own feed is the current hub of the day.