1. A method implemented via a computer system, comprising: said computer system receiving a user inputted online digital message or posting including an indication of a sentiment within the message or posting using a user-inputted pre-defined explicit Sentiment Identifier proximate a user-inputted word, phrase or number that represents the Sentiment, and said computer system identifying said pre-defined explicit Sentiment Identifier and the Sentiment and storing data pertaining to said Sentiment in non-transitory digital data storage, and said computer system receiving within said message or posting a null value or no Topic Identifier input and the computer system assigning Topic based on identification of said null value or no Topic Identifier by the computer system.
2. The method of claim 1 , wherein the Sentiment Identifier is a symbol.