Not grammar as such but these three things bug me:
people who won't use the 'shift' key. they start every sentence with a lower-case letter. like this. and like this.
People who don't put spaces between sentences.Like this.And like this.
People who don't press the 'enter' key twice before starting a new paragraph.
Like this.
And like this.
I prefer the traditional two spaces after a full stop to separate sentences but a single space seems to be becoming fairly common practice.
Of course, combining two or three of the above makes for the ultimate eye-searing mess.
