{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,2]],"date-time":"2025-08-02T17:28:34Z","timestamp":1754155714685,"version":"3.41.2"},"reference-count":31,"publisher":"Emerald","issue":"3","license":[{"start":{"date-parts":[[2016,7,4]],"date-time":"2016-07-04T00:00:00Z","timestamp":1467590400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.emerald.com\/insight\/site-policies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,7,4]]},"abstract":"<jats:sec>\n               <jats:title content-type=\"abstract-heading\">Purpose<\/jats:title>\n               <jats:p> \u2013 The purpose of this paper is statistical examination of nearly 7,000 web directories and an analysis of factors which affect their quality measured by PageRank. <\/jats:p>\n            <\/jats:sec>\n            <jats:sec>\n               <jats:title content-type=\"abstract-heading\">Design\/methodology\/approach<\/jats:title>\n               <jats:p> \u2013 The authors analysed 6,821 directories registered at <jats:uri>www.katalogiseo.info<\/jats:uri>\/. The following information about the directories was examined: the year of registration on the website, the directory\u2019s PageRank value, the existence of an active IP address, backlink requests, a fee charged for submission to the directory, as well as directory moderation and subject. Statistical analyses were performed with the use of Microsoft Excel, version 2010, and R software, version 3.0.0. The PageRank values were collected with a software written in Python. <\/jats:p>\n            <\/jats:sec>\n            <jats:sec>\n               <jats:title content-type=\"abstract-heading\">Findings<\/jats:title>\n               <jats:p> \u2013 The study has shown a gradual increase in popularity of directories as one of the basic tools in search engine optimisation. The analysis has indicated a relatively high percentage of spam web directories. The evidence of this is the number of directories with undetermined PageRank values. The study revealed that careful management of a directory and its subject have key impact on directory quality measured by PageRank. <\/jats:p>\n            <\/jats:sec>\n            <jats:sec>\n               <jats:title content-type=\"abstract-heading\">Originality\/value<\/jats:title>\n               <jats:p> \u2013 Relatively few publications focus on the problem of web directories which represent a very large group of websites created solely to manipulate web search engine rankings. This paper discusses the phenomenon of web directories, reveals the percentage of spam directories, and factors which affect their quality measured by PageRank.<\/jats:p>\n            <\/jats:sec>","DOI":"10.1108\/prog-08-2014-0060","type":"journal-article","created":{"date-parts":[[2016,6,8]],"date-time":"2016-06-08T10:31:04Z","timestamp":1465381864000},"page":"340-352","source":"Crossref","is-referenced-by-count":3,"title":["Web directories: selected features and their impact on directory quality"],"prefix":"10.1108","volume":"50","author":[{"given":"Adam","family":"Jachimczyk","sequence":"first","affiliation":[]},{"given":"Magdalena","family":"Chrapek","sequence":"additional","affiliation":[]},{"given":"Zbigniew","family":"Chrapek","sequence":"additional","affiliation":[]}],"member":"140","reference":[{"key":"key2020121404044741100_b1","unstructured":"Bailyn, E.\n                and \n                  Bailyn, B.\n                (2011), \n                  Outsmarting Google: SEO 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available at: http:\/\/ilpubs.stanford.edu:8090\/770\/1\/2004-52.pdf (accessed 30 November 2013)."},{"key":"key2020121404044741100_b13","unstructured":"Gy\u00f6ngyi, Z.\n               , \n                  Berkhin, P.\n               , \n                  Garcia-Molina, H.\n                and \n                  Pedersen, J.\n                (2006), \u201cLink spam detection based on mass estimation\u201d, paper presented at VLDB \u201806, Seoul, 12-15 September, available at: http:\/\/infolab.stanford.edu\/\u223czoltan\/publications\/gyongyi2006link.pdf (accessed 30 November 2013)."},{"key":"key2020121404044741100_b15","doi-asserted-by":"crossref","unstructured":"Henzinger, M.R.\n               , \n                  Motwani, R.\n                and \n                  Silverstein, C.\n                (2002), \u201cChallenges in web search engines\u201d, \n                  SIGIR Forum Fall\n               , Vol. 36 No. 2, pp. 1-12, available at: 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Keyword Research for Search, Social, and Beyond\n               , John Wiley \n\t\t\t\t\t&\n\t\t\t\t Sons, Indianapolis, IN."},{"key":"key2020121404044741100_b18","unstructured":"Joyce, J.\n                (2012), \u201cWhy links matter\u201d, available at: http:\/\/searchenginewatch.com\/article\/2166568\/Why-Links-Matter (accessed 23 December 2013)."},{"key":"key2020121404044741100_b19","unstructured":"Joyce, J.\n                (2013), \u201cLink building A-Z guide \u2013 definitions \n\t\t\t\t\t&\n\t\t\t\t terms\u201d, available at: http:\/\/searchenginewatch.com\/article\/2172916\/Link-Building-A-Z-Guide-Definitions-Terms (accessed 30 November 2013)."},{"key":"key2020121404044741100_b20","unstructured":"Ledford, J.L.\n                (2008), \n                  SEO: Search Engine Optimization Bible\n               , Wiley Publishing, Inc., Indianapolis, IN."},{"key":"key2020121404044741100_b21","unstructured":"List of Directories for SEO\n                (n.d.), available at: www.katalogiseo.info\/ (accessed 10 September 2013)."},{"key":"key2020121404044741100_b23","unstructured":"McGee, M.\n                (2010), \u201cYahoo closes European directories, says US directory is safe\u201d, available at: http:\/\/searchengineland.com\/yahoo-closes-european-directories-us-directory-safe-44610 (accessed 23 December 2013)."},{"key":"key2020121404044741100_b22","doi-asserted-by":"crossref","unstructured":"Malaga, R.A.\n                (2008), \u201cWorst practices in search engine optimization\u201d, \n                  Communications of the ACM\n               , Vol. 51 No. 12, pp. 147-150.","DOI":"10.1145\/1409360.1409388"},{"key":"key2020121404044741100_b24","doi-asserted-by":"crossref","unstructured":"Ntoulas, A.\n               , \n                  Najork, M.\n               , \n                  Manasse, M.\n                and \n                  Fetterly, D.\n                (2006), \u201cDetecting spam web pages through content analysis\u201d, \n                  Proceedings of the 15th International Conference on World Wide Web (Edinburgh, Scotland, 23-26 May). 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