Crossword

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Across
  1. 2. used to talk with user in private
  2. 3. Informal interchange of thoughts
  3. 8. An unique sequence of characters used to identify a
  4. 9. One hundred forty is the limit
  5. 10. A very short message posted on the Twitter
  6. 11. Social network
Down
  1. 1. People behind you
  2. 4. Information concerning your profil
  3. 5. The inhabitants of a town
  4. 6. A specific key word
  5. 7. An user
  6. 11. The general course