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On 14 December 2023, the Polish Office of Competition and Consumer Protection (UOKiK) announced an investigation into OLX Group, a popular classifieds platform in Poland, citing concerns about non-transparent and misleading terms in OLX's opinion posting system. The investigation focuses on potential issues with an algorithm that may inflate ratings, altering their original nature. It also evaluates the rating scale algorithm assigning higher weight to positive reviews, potentially presenting inflated ratings. OLX could face fines up to 10% of its turnover.
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