Huh?

My sister has come to stay for the weekend and I was telling her about 'blipping'.

Her: Why can't you put that photo on?
Me: Because I didn't take it today.
Her: So?
Me: Well it has to be up loaded on the day you took it.
Her: Why?
Me: Because it's a daily photo journal thing, a bit like a diary I suppose.
Her: But why do you do it?
Me: Because it's a bit of fun and people write comments.
Her: No one's going to comment about this!
Me: You'd be surprised!

Don't let me down out there.........