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We present a lightweight web scraping solution to harness data from online social networks; thanks to it we were able to monitor a nation-wide portal for childcare and see the evolution of online reviews from both families and carers. We analysed the data by first considering topological information to test centrality metrics as proxies for trustworthiness. Next, we focused on features\/profile analysis and tested the Castelfranchi\u2013Falcone trust model from psychology (CF-T), fitting it to online reviews of childcare services. Even though such reviews are relatively scarce and seemingly skewed, we feature-engineered the CF-T model to predict the evolution of reviews, treated as proxies for trust. By aggregating CF-T scores at the regional level, we discovered a strong correlation with per capita GDP, which suggests that high levels of trust in social networks of needs reflect social capital.<\/jats:p>","DOI":"10.1145\/3715882","type":"journal-article","created":{"date-parts":[[2025,1,29]],"date-time":"2025-01-29T11:33:17Z","timestamp":1738150397000},"page":"1-26","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Trust Models Go to the Web: Learning How to Trust Strangers"],"prefix":"10.1145","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7421-216X","authenticated-orcid":false,"given":"Pasquale","family":"De Meo","sequence":"first","affiliation":[{"name":"DICAM, University of Messina, Messina, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9323-875X","authenticated-orcid":false,"given":"Ylli","family":"Prifti","sequence":"additional","affiliation":[{"name":"CMS, Birkbeck - University of London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9542-4110","authenticated-orcid":false,"given":"Alessandro","family":"Provetti","sequence":"additional","affiliation":[{"name":"SPS, University of Milan, Milan, Italy and CMS, Birkbeck - University of London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2025,3,17]]},"reference":[{"key":"e_1_3_3_2_1","doi-asserted-by":"publisher","DOI":"10.1109\/MIC.2015.93"},{"key":"e_1_3_3_3_1","doi-asserted-by":"publisher","DOI":"10.1177\/1461444814535190"},{"key":"e_1_3_3_4_1","doi-asserted-by":"publisher","DOI":"10.1109\/EISIC.2011.17"},{"issue":"1","key":"e_1_3_3_5_1","first-page":"2","article-title":"Le capital social: Notes provisoires","volume":"31","author":"Bourdieu Pierre","year":"1980","unstructured":"Pierre Bourdieu. 1980. 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