Awesome things

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Across
  1. 5. something dumb from the internet
  2. 6. a letter of the Greek alphabet even if they don't know that
Down
  1. 1. I don't know what this is
  2. 2. a lovely place to live apparently
  3. 3. What the....
  4. 4. another one and also the generation of these incomprehensible words