Hi WikiTreers,
Last year we created Special:Unconnected to enable you to see the people on your Watchlist who aren't connected to the "big tree" by blood or marriage.
"Unconnected" means a person isn't connected within 100 degrees of any of the anchor people on http://www.wikitree.com/wiki/Special:Connection
It's not exactly the same as saying the person doesn't have a fleshed-out genealogy, but it's a close approximation to it. There are very few unconnected people with solid family trees.
Generous Connectors Project members asked for something more: the ability to browse everyone on WikiTree who isn't connected, rather than just the unconnected people on their Watchlist.
Making connections for strangers is a true "RAOGK" (Random Act Of Genealogical Kindness -- to use the term coined for a classic website of that name).
Connectors are awesome people who want to help connect other people with their genealogy skills. They embody the WikiTree mission to connect the world on one free tree.
So, Connectors, here is your grand rabbit hole: http://www.wikitree.com/wiki/Special:Unconnected
You can browse all connected people with a given surname, e.g. Smith.
Or you can browse by birth date, to work on the earliest first, or to work on the people from a certain time period, e.g. the 1500s or the 1700s.
You can limit to Open profiles and/or orphaned profiles.
Onward and upward, for the single family tree,
Chri