Well, I'm a Leo and I've always wondered how these 'theories' about Star Signs are created... Being a Leo sounds pretty awesome, a lion is a gorgeous creature but seriously, I'm more like a kitten than a lion haha, I don't match with the characteristics of a Leo at all. Although... the only thing I could kinda relate to, was that the Leo hates getting a silver medal instead of a golden one. Yeah sure, a silver medal is good but let's be honest, doesn't everyone prefer a golden one? I don't really think that's specific for a Leo.
Anyways... I don't believe in horoscopes, I totally agree with Flible. Though I have to admit that I read my horoscope sometimes when I'm bored, but I don't take it too seriously.