Twitter's Value as Measure of Scientific Impact Encounters New Doubt

Evaluating scientists by their journal-citation counts is a much-despised shorthand at many universities. And so, when a study came out two years ago suggesting Twitter mentions as a supplement or even an alternative to citation counts, it got a fair bit of attention.

Now, according to a much more exhaustive analysis of the question, it appears that any correlation between tweets and citations was greatly overstated.