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Fighting Link Farms using Proof-Of-Work
Citation key GoMuJa:2005:LinkFarms
Author Sebastian Golze and Gero Mühl and Michael C. Jaeger
Title of Book IADIS WWW/Internet 2005 Conference
Pages 85–92
Year 2005
ISBN 972-8924-02-X
Address Lisbon, Portugal
Volume 1
Month oct
Publisher IADIS Press
Abstract As email spammers try to fill inboxes with masses of commercial advertising, link farmers congest search engines with useless entries. Link farms are interlinked sites containing little or no useful information but appear among the first places in search engine result pages. The surfers which follow such links are then redirected to online shops or are flooded with advertisements. As for spam email this is not only annoying but once a certain level is exceeded it makes it nearly impossible to find the real information one is searching for. Our idea is to apply the concept of Proof-of-Work (POW) functions, which are moderately hard cryptographic challenges, to this problem. The webserver of a link farm will have to pay in the form of a POW in order to get its documents indexed. This payment will make link farms economically uninteresting helping to reduce their amount and to clean up search engine databases.
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