rebecca: senor charles grassley of iowa, well intotois 70's, not the typical social medidia guy, he's out there tweeting all day long anit is so authentic. it is coming from his voice using hishthand. he has a huge twitter following and it's because he's reaching out to voters directly, cutting out thmiddleman. he's not having his press secretary tweet for him, and it works. guest: you c tell when you get something from a corporation that is canned. you look at senator lindsey grahamwho does not even use e-mail, you have people who are authentic and how they use it youu tend to belve they understand you and are p part of your life and yo sphere and your world. if you are beinguthentic a hohow you are using it, peoplee tend to avitate towawards that. rebecca: howo you pick w which e is right for you and how do you use it effectively? guest: the first thing is you hahave to figure out w what your demographic is. depending on who your decision-makers are, sometimes it cane linked in. sometimes it can be twitter t to create a social proof of who you are being expert in you space or it --