First was with an old friend who was confronted with a drop-down box for her relationship status 11 choices.

FORBES: Connect

Music is not a drop-down box of 11 choices.

FORBES: Connect

Users can also pursue what Brill calls "constrained serendipity" by typing terms into a search box or picking categories through a drop-down menu.

FORBES: Magazine Article

The new Explore Box looks like a Google search box, with the auto-suggest drop down of suggestions as you type a search term.

FORBES: StumbleUpon Brings More Focus With Explore Box