Keith’s note: According to this high level analysis of the impact of Twitter using the hashtag #WhatIsNASAFor between 7-10 February, a total of 17,597,370 impacts were made. On this chart Twitter impacts are calculated by multiplying the number of tweets someone makes times the number of followers they have. Personally I think “reach” and “impact” are more complex than this – but this gives you a general idea of the […]