Sentiment Analysis - what can "like" mean

On Internet, Sentiment Analysis allows businesses to analyze what people think about their product, service, an event or for that matter in the context of personal networks, analyze if people like your photo or a thought you share on your wall. Facebook has just one qualifier "like" and I think it is not allowing people to express the right sentiment - it also makes life difficult for businesses to analyze and make sense of the analyzed data. It is time we introduce more responses than "like" OR like we do now, have multiple interpretations of "like".