Until last week I assumed that if I started a tweet with someones name - e.g. "@ClarkeChingsCat hey cat!" - then it appeared on all of my followers' twitter home pages.
It only appears on that person (or cat's) home page and on anyone who follows me and that person (or cat's) home page.
I thought Twitter was so simple that you didn't have to read the manual. I was wrong.
I wonder if I was alone in my ignorance?