?A man whose credit limit is reduced by $5,000 is informed that other shoppers at stores he shopped at have bad payment history with American Express. This story that is from the article “Facebook Is Using Us” is an example of negative impact of our “never offline” life. Companies that are buying our data from Google, Microsoft, and Facebook make assumptions about their customer regardless of who people are. Despite the fact that the Internet has assumed a useful role in our daily lives, and the appearance of social networking sites such as Facebook, Twitter, LinkedIn, and My Space decrease the gaps among people around the world, a technological era brings to us some drawbacks. We benefit from the Internet and social media through communication and entertainment; however, we should take firm control of our online activities. The Internet and social media networks are great opportunities in business communication. Because most of social networks are free, and anyone can sign up for membership, businesses that are using sites as their marketing tools are able to reach massive numbers of customers. Facebook alone, to illustrate, has over a billion users. Not only do individuals and small businesses advertise on social sites, but also some national corporations such as Nike and Oreo are reaching their customers via Facebook. The reason marketing through social sites is effective is not just that it offers free marketing; it is far more than that. By advertising on network sites, businesses can send information to customers in the fastest way. According to an article by Lori Andrews titled “Facebook Is Using Us,” Andrews explains how advertisers target their customers through Facebook. Because of data aggregation, business marketers manage to find users who are interested in certain products via details or key words such as “relationship status, location, activities, favorite books and employment.” In a similar way, businesses are able to filter customers through hashtags? a word, or group of words after the # sign (for example, #Nike and #eatburgers). It is a very effective way