1. Giant blocks of unformatted text without punctuation or proper capitalization
2. Texting short hand. Some things are ok like lol, but condensing words into a single letter (like you = u) drives me nuts honestly most phones out there today have full keyboards which really makes texting shorthand just lazy.
3. People who don't read a post that clearly answers their question then ask the same question again directly under the post that answers said question.
