A forest of trees on Ancestry and Rootsweb.
A tree uploaded to Rootsweb can be "viewed" from the Ancestry site. It can't be uploaded on the Ancestry site, it can't be updated on the Ancestry site, just "viewed". A Rootsweb WCT is an Ancestry World Tree. Here is the link to find where it's buried: http://www.ancestry.com/trees/awt/main.aspx