(1) There was a time traveler from the year 2036, who briefly made appearances in 1975 and 2000-2001. His psuedonym was John Titor. In November 2000 through March 2001, he posted on various internet sites, telling about his time travel. In response to several questions, he explained (among other things) that the U.S. would go to war against Iraq to stop its nuclear weapons. He also foretold that the WMD threat leading up to the war would be discovered to be "BS" (bullshit). Which is pretty remarkable since he wrote this before 9/11. (On the other hand, the U.S. Civil War which was to begin in 2004 never really materialized).
(2) Titor also discussed the Year 2038 Problem, which prompted his time travel (to recover obsolete computer parts). Whatever you may think of Titor, the Year 2038 Problem apparently is real. At 3:14:08 UTC on January 19, 2038, many computers’ timers will "wrap around" and give a negative number. This will cause problems similar to those feared with the whole Y2K thing.
However, this will only affect 32-bit computers. Most computers now use 64-bit achitecture. 64-bit computers, by the way, will also experience a similar time problem . . . on Sunday, December 4 . . . in the year 292,277,026,596 A.D.
So I think we don’t have to worry about the Year 292,277,026,596 Problem.
(3) The earliest twenty dot-com domain names, in order (see here for the first 100):
||Create date||Domain name|