twitter easier to use. more monthly activity users bringing its worldwide tally to 241 million for the last three months of 2013, and that's a lot slower than the 6.4% growth in the prior quarter. but some good news though, older users tend to click on ads on twitter, and we are seeing some revenue growth there in the last earnings report. but twitter's stock right now down about two-thirds of a percent in midday trading. jon? jon: all right, jo ling kent, thank you. jenna: a new study is linking birth control pills to a debilitating disease. the doctor is in with what you need to know. also it is oscar weekend, hollywood's biggest stars preparing for the 86th annual academy awards sunday night. so who will come out on top? were our fox news oscar perts -- easy enough for me to say, right, jon? -- joining us live with his predictions coming up next.