Time travel has captured the public imagination for much of the past
century, but little has been done to actually search for time travelers.
Here, three implementations of Internet searches for time travelers are
described, all seeking a prescient mention of information not previously
available. The first search covered prescient content placed on the
Internet, highlighted by a comprehensive search for specific terms in
tweets on Twitter. The second search examined prescient inquiries
submitted to a search engine, highlighted by a comprehensive search for
specific search terms submitted to a popular astronomy web site. The
third search involved a request for a direct Internet communication,
either by email or tweet, pre-dating to the time of the inquiry. Given
practical verifiability concerns, only time travelers from the future
were investigated. No time travelers were discovered. Although these
negative results do not disprove time travel, given the great reach of
the Internet, this search is perhaps the most comprehensive to date.