Twitter Sentiments Analysis useful features

Question

I\'m trying to implement Sentiments Analysis functionality and looking for useful features which can be extracted from tweet messages.The features which I have in my mind for no

Answer 1

If I post really good news on twitter, a lot of people might start publicly congratulating me.
So If I post X, and then get a lot of 'Congrats' tweets from other people, then X is probably positive.
In general, the type and frequency of people who retweet my tweet might have something to do with its inherent sentiment.