Web Science/Part2: Emerging Web Properties/Web Search Ecosystem/Understanding the Problems with Click Fraud/quiz

1 Who might have interest to click on certain advertisements without having a real interest in the advertised product or service?

	The publisher
	The advertiser
	The ad agency
	The customer (person who is just surfing the web)
	The competitor of the advertiser
	The competitor of the publisher
	Friends of the publisher

2 Who suffers from click fraud in the above mentioned sense?

	The advertiser
	The ad network
	The publisher
	The customer (person who is just surfing the web)

3 Which payment models can be attacked by click fraud

	Cost per lead
	Cost per click
	cost per mille

4 Does click fraud only consist of fake clicks on advertisements?

	Yes! That is the only option how click fraud can exist
	No! There exists also the possibility that the publisher simulates clicks with fake referrers on the advertisers web site.