The "Recent OneHome Visitors" widget shows the contacts that have recently visited their Portal, and tracks a few of the activities they may have taken.  Up to 10 contacts may be listed here.  In the picture example, one contact has saved a listing as a favorite (the "heart" icon), and another has added a note to their listing.  Clicking these icons will show just the listings that have been saved during this particular visit, rather than their full list of favorites, possibilities, or notes.  This keeps you apprised of the activity level of your clientele.