This week, I moderated a session at SMX about real time search. Personally, I find the convergence of social and search to be perhaps the most significant trend of 2009. Social adds an entirely new dimension to search. Traditionally search has been used to find “what” you wanted to know more about. Social adds the dimension of time. Suddenly, relevance isn’t the only measure. Search now needs a “stale date”, a measure of the freshness of the results.