Searches for “Donate bernie” in the United States started starting spiking early on the 14th of January, the day after sources close to Elizabeth Warren alleged that he had told Warren a woman can’t be president. At their peak, such searches were at over four times their baseline level:

Of course we can’t say this spike in people looking to donate was caused by the controversy, however it seems reasonably likely. If so, perhaps the main effect was to rally Sander’s base.

Data courtesy of Google trends.