Social Media continues to revolutionize the way that we communicate with one another.For many companies, it is becoming the medium of choice in the way that they advertise to consumers in existing and new markets.

How did social media begin, and why has it become popular so quickly?

• Compareandcontrast Facebook, Twitter, LinkedIn, and YouTube, briefly describe how and why subscribers use them (no citations from the text).
• Explain the use of "#hashtag" in social media platforms.Why do people us "hashtags" and how does "#hashtag" tags work?
• How would a business use "#hashtagging" to advance consumer awareness of products and services?
• How does a business measure the effectiveness of their social media advertising effort?