okay, your points here, suggestions and tips for people who want to keep their information prvate. a shared care? >> yes, that means that if you put it up on facebook, you better be darn ready to have it shared publicly. that is essentially what you're doing even if you have all of your settings set up, somebody else can sharethat data and it can be totally public. gerri: how does that they used policy help me? >> oh, it is such an eye-opening thing. i have had my daughters do that and you cannot believe what you find out about what they are sharing. it totally is revealing about the information you're giving way on her. gerri: you talk about customized settings. i think this is critical. you do not want all this information out there, i do not think. >> no, you do not. you want to lock it down from the start. we put a video on our blog about how to go about it. that setting on the right-hand side, so that you are not automatically sharing everything in the future or the past. >> john, thank you so much for coming on and wning us about this. we appreciate your timee have a great we