Apparently there's something very significant about that date. I am quite convinced that time travel will effectively be invented on or before then, because I am constantly inundated with spam supposedly sent from 1/18/38.
Of course as long as I'm speculating, I suppose it's just slightly less plausible that a time traveler jumped into his (or her) Delorean, jumped back to just before World War II, hooked their PC up to a primitive telegraph-based internet and is in the process of changing the past while we simply delete their emails.
Now pardon me, I have to go back and pay tribute to our time-traveling Overlords--- whoops, did I say Overlords? I meant Protectors!