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StackOverflow and those other sites aren't search engines. They may have search engines in them but not many people use them (the only time I reach StackOverflo
by repolfx 7y ago
StackOverflow and those other sites aren't search engines. They may have search engines in them but not many people use them (the only time I reach StackOverflow, booking.com etc is via search engine referral). They're user content hosting and curation sites.
- joantorres 7y agoTechnically you are correct, in the sense that they do not crawl the web like Google or Bing do. But from a user perspective, they do provide a very useful service of aggregation, discovery and comparison of structured data that is way more effective than using Google search queries, if you know the type of information you are looking for.
- kordlessagain 7y agoIt's the corpus that matters, mostly. The StackExchange sites are Q&A formatted and with an SKG graph (such as in solr), you can do topic extraction on questions OR answers which then leads to being able to match other answers (with links) to other questions, among other things. With related topics, many other things come to life.