Read this and answer the question. If the question is unanswerable, say "unanswerable".

In May 2008, the National Archives announced a five-year agreement to digitize selected records including the complete U.S. Federal Census Collection, 17901930, passenger lists from 18201960 and WWI and WWII draft registration cards. The partnership agreement allows for exclusive use of the digitized records by Ancestry.com for a 5-year embargo period at which point the digital records will be turned over to the National Archives.

Which genealogy website benefits by the May 2008 announcement?
Ancestry.com