Twitter and Google trends is mostly search related to retail traders.  Since the majority of retail traders do not short, they typically only buy.  It has been proven that a spike in interest w/ retail traders will cause them to buy those stocks.  However, after the interest dies down, the stocks typically fall about 5% / year on average.

After a show like mad money recommends a stock to buy, especially a small cap stock, if it is mostly uninformed buying, the stock will go down after.  This is a lucrative shorting entry point.