Lady Gaga's emotional Oscar performance shined a light on the Obama administration's It's on Us campaign, which Vice President Joe Biden discussed while introducing the singer at Sunday's show -- and now we know just how big an impact the moment had. According to sources, It's on Us received 37,401 pledges since Gaga's performance -- almost 10 times as many pledges as the typical 4,000 per week. There were also 231,194 visits to the website Biden mentioned. Plus, the Twitter hashtag #ItsOnU