Catching up made easy

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Across
  1. 2. (2 words)updates or additional information
  2. 5. it`s a status that indicates whether a user is available for collaboration
  3. 8. (2 words)learn and discuss the newest facts about something
  4. 9. messages exchanged between two or more individuals or within a group, all related to a specific topic or conversation
Down
  1. 1. (2 words)informal phrase meaning if you need to ask, don`t be shy
  2. 3. (verb) means that you double-check what you have written
  3. 4. thanks for taking ...
  4. 6. get the green ... from somebody
  5. 7. ... messaging (a form of real-time communication)