Crossword Puzzle 18

12345678
Across
  1. 3. Firefox maker
  2. 7. "He's only kidding," you chirp
  3. 8. Device with apps
Down
  1. 1. World's most visited website
  2. 2. Popular social networking site
  3. 4. Google browser
  4. 5. online video giant
  5. 6. Photo-sharing app