The Role of Search Engine Optimization in Search Rankings

Berman, Ron and Katona, Zsolt (2010): The Role of Search Engine Optimization in Search Rankings.

Abstract

Web sites invest significant resources in trying to influence their visibility in online search results. We study the economic incentives of Web sites to invest in this process known as search engine optimization. We focus on methods that improve sites' ranking among the search results without affecting their quality. We find that the process is equivalent to an all-pay auction with noise and headstarts. Our results show that in equilibrium, under certain conditions, some positive level of search engine optimization improves the search engine's ranking and thus the satisfaction of its visitors. In particular, if the quality of sites coincides with their valuation for visitors then search engine optimization serves as a mechanism that improves the ranking by correcting measurement errors. While this benefits consumers and search engines, sites participating in search engine optimization could be worse off unless their valuation for traffic is very high. We also investigate how search engine optimization affects sites' investment in content and find that it can lead to underinvestment as a result of wasteful spending on search engine optimization.

• Item Type: MPRA Paper
• Language: English
• Keywords: seo; search engine optimization; search marketing; all-pay auctions; contests
• Subjects: M - Business Administration and Business Economics ; Marketing ; Accounting ; Personnel Economics > M3 - Marketing and Advertising > M31 - Marketing; M - Business Administration and Business Economics ; Marketing ; Accounting ; Personnel Economics > M3 - Marketing and Advertising > M37 - Advertising; D - Microeconomics > D4 - Market Structure, Pricing, and Design > D44 - Auctions; D - Microeconomics > D8 - Information, Knowledge, and Uncertainty > D83 - Search ; Learning ; Information and Knowledge ; Communication ; Belief ; Unawareness

References

Aggarwal, Gagan, Jon Feldman, S. Muthukrishnan, Martin Pal. 2008. Sponsored search auctions with markovian users. WINE 08: Proceedings of the 4th International Workshop on Internet and Network Economics. Springer-Verlag, Berlin, Heidelberg, 621{628.

Athey, Susan, Glenn Ellison. 2009. Position auctions with consumer search. NBER Working Papers 15253, National Bureau of Economic Research, Inc. URL http://ideas.repec.org/p/nbr/nberwo/15253.html.

Barut, Yasar, Dan Kovenock. 1998. The symmetric multiple prize all-pay auction with complete information. European Journal of Political Economy 14 627{644.

Baye, Michael R., Dan Kovenock, Casper G. de Vries. 1996. The all-pay auction with complete information. Economic Theory 8 291{305.

Benczur, Andras A., DAvid Siklosi, Jacint Szabo, Istvan Biro, Zsolt Fekete, Miklos Kurucz, Attila Pereszlenyi, Simon Racz, Adrienn Szabo. 2008. Web spam: a survey with vision for the archivist. IWAW '08 International Web Archiving Workshop. Available at: http://iwaw.europarchive.org/08/IWAW2008-Benczur.pdf.

Chen, Yongmin, Chuan He. 2006. Paid Placement: Advertising and Search on the Internet. SSRN eLibrary .

Clark, Derek J, Christian Riis. 1998. Competition over more than one prize. American Economic Review 88(1) 276{89. URL http://ideas.repec.org/a/aea/aecrev/v88y1998i1p276-89.html.

Edelman, Benjamin, Michael Ostrovsky, Michael Schwarz. 2007. Internet advertising and the generalized second-price auction: Selling billions of dollars worth of keywords. American Economic Review 97(1) 242{259. URL http://ideas.repec.org/a/aea/aecrev/v97y2007i1p242-259.html.

Ghose, A., S. Yang. 2009. An empirical analysis of search engine advertising: Sponsored search in electronic markets. Management Science 55(10) 1605{1622.

Hillman, Arye L., John G. Riley. 1987. Politically contestable rents and transfers. UCLA Economics Working Papers 452, UCLA Department of Economics. URL http://ideas.repec.org/p/cla/uclawp/452.html.

Jeziorski, Przemyslaw, Ilya Segal. 2009. What Makes Them Click: Empirical Analysis of Consumer Demand for Search Advertising. SSRN eLibrary .

Katona, Zsolt, Miklos Sarvary. 2010. The race for sponsored links: Bidding patterns for search advertising. Marketing Science forthcoming.

Kirkegaard, Rene. 2009. Favoritism in asymmetric contests: Head starts and handicaps. working paper .

Konrad, Kai A. 2007. Strategy in contests { an introduction. WZB-Markets and Politics Working Paper No. SP II 2007-01 .

Krishna, Vijay John Morgan. 2007. The winner-take-all principle in small tournaments. Advances in Applied Microeconomics 28 849{862.

Rutz, Oliver J., Randolph E. Bucklin. 2007. A Model of Individual Keyword Performance in Paid Search Advertising. SSRN eLibrary . 26

Sen, Ravi. 2005. Optimal search engine marketing strategy. Int. J. Electron. Commerce 10(1) 9{25.

Siegel, Ron. 2009. All-pay contests. Econometrica 77(1) 71{92.

Varian, Hal R. 2007. Position auctions. International Jour- nal of Industrial Organization 25(6) 1163{1178. URL http://ideas.repec.org/a/eeeindorgv25y2007i6p1163-1178.html.

White, Alexander. 2009. Search engines: Left side quality versus right side profits. working paper, Touluse School of Economics .

Xing, Bo, Zhangxi Lin. 2006. The impact of search engine optimization on online advertising market. ICEC '06: Proceedings of the 8th international conference on Electronic commerce. ACM, New York, NY, USA, 519{529. doi: http://doi.acm.org/10.1145/1151454.1151531.

Xu, Lizhen, Jianqing Chen, Andrew B. Whinston. 2009. Too organic for organic listing? interplay between organic and sponsored listing in search advertising. working paper, Available at SSRN: http://ssrn.com/abstract=1409450 . 27