Cronache di Sarvegia

Today I quickly answered to an email from my sister with a "+1". I couldn't imagine that it would have puzzled her so much, or pulled an incorrect explanation from my brother So, what does "+1" mean?

It's simple: it just means "those who are counting how many agree with this, please add one", or simply put: "I agree".

I know, we internet junkies look complicated sometimes. But we aren't, are we?