Things that annoy me:

  1. 1.
    Using the letter "n" instead of spelling out "and" .
  2. 2.
    Using the letter "u" instead of spelling "you".
  3. 3.
    Mispelling words because you are too lazy to write the whole word...i.e using "cuz" instead of "because".
  4. 4.
    People who don't know the difference between "their", "there", and "they're".
  5. 5.
    People who don't know the different between "your" and "you're".
  6. 6.
    Just the overall lack of grammar skills and laziness I see on the internet.