what is a good opening statement for my speech on the implications of social networking?

[xxHaBoNxx]

th exact topic is 'Does social networking do more harm than good?' and i argue it does(do more harm than good)
i need a sentence which would immediately grab the audiences attention

[Tom]

Try 'hello, fyou know what my presetstion is about( and if try don't inform them), and I would like to start with a question. Who uses social networking websites, like Facebook? ( it is like a poll, people just put there hands up), and another question, who thinks they are good? (put hand up again)' then carry on with whatever, hope this helped, ad that it made sense. Good luck

[c.a.b.]

http://download.jw.org/files/media_magaz...202_04.mp3