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Although used to study online CE distribution, automated data collection tools (e.g., webcrawlers) have yet to be shown effective at targeting only relevant data. Using CE-related image and keyword criteria, we compare networks starting from CE websites to those from similar non-CE sexuality websites and dissimilar sports websites. Our results provide evidence that (a) webcrawlers have the potential to provide valid CE data, if the appropriate criterion is selected; (b) CE distribution is still heavily image-based suggesting images as an effective criterion; (c) CE-seeded networks are more hub-based and differ from non-CE-seeded networks on several website characteristics. Recommendations for improvements to reliable criteria selection are discussed.<\/jats:p>","DOI":"10.1177\/1079063215616818","type":"journal-article","created":{"date-parts":[[2015,11,26]],"date-time":"2015-11-26T21:48:26Z","timestamp":1448574506000},"page":"685-708","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":24,"title":["Assessing the Validity of Automated Webcrawlers as Data Collection Tools to Investigate Online Child Sexual Exploitation"],"prefix":"10.1177","volume":"29","author":[{"given":"Bryce","family":"Westlake","sequence":"first","affiliation":[{"name":"San Jose State University, CA, USA"},{"name":"Simon Fraser University, Burnaby, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Martin","family":"Bouchard","sequence":"additional","affiliation":[{"name":"Simon Fraser University, Burnaby, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Richard","family":"Frank","sequence":"additional","affiliation":[{"name":"Simon Fraser University, Burnaby, British Columbia, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2015,11,26]]},"reference":[{"key":"bibr1-1079063215616818","doi-asserted-by":"publisher","DOI":"10.1109\/SPW.2013.16"},{"key":"bibr2-1079063215616818","unstructured":"Almutairi A., Parish D., Phan R. 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