The following questions refer to information given in Paragraphs 1–6. Decide which paragraph is referred to in each and answer these questions. 1. Why have some forms of advertising become ineffective? 2. What are the two weaknesses of the Internet as an advertising medium? 3. What new services have advertising agencies started to offer? 4. What happened in the past when new advertising media appeared? 5. How much does it cost to advertise at peak viewing times in the US? 6. What proportion of the money spent on advertising may be wasted?