I was on the person profile for my 5th great-grandfather, Amos Plimpton (1735-1808) today:
I clicked on the "Member Connect" button on the menu ribbon above the Facts and Hints line:
This tells me that I have 15 connections for Amos Plimpton. The first one is for One World Tree! I thought that was eliminated a number of years ago. It apparently is still on Ancestry somewhere, although it is not included in the Card Catalog (I checked).
Further down are the other 14 Ancestry Member Trees that have my Amos Plimpton in them. The first one and the start of the second one is shown below:
The first one doesn't have any attached records, but the second one does - here is the next screen for the second tree on the list:
There were attached records on many of the 14 Ancestry Member Trees in this Member Connect system for Amos Plimpton.
I clicked on one of them to see the record:
I can "Save" this record to Amos Plimpton in my tree if I choose to.
In this Ancestry Member Tree, I have not attached any records to Amos Plimpton, so I have no "Accepted Hints." The 11 "New Hints" on the "Hints" page are all of the items from the Member Connect trees plus one Hint for other Ancestry Member Trees..
This confirms what I thought was the case - the Hints are from records attached to other person's Ancestry Member Trees for the subject person, rather than from a search for the tree person.