Search LinkedIn for the profile of an expert in any industry or profession. Now imagine that you are going to introduce this person as a speaker at a convention. You will make an in-person introduction at the time of the speech, but you decide to introduce him or her the day before on Twitter. Write four tweets: one that introduces the expert and three that cover three key supporting points that will enhance the speaker's credibility in the minds of potential listeners. Make up any information you need to complete this assignment, then email the text of your proposed tweets to your instructor.