This paper investigates the challenges affecting knowledge sharing among lecturers using web 2.0 platforms to meet the requirements of the digital age of the 21st century. Knowledge sharing is an exchange of skills, ideas, experience, and understanding among people. The study is base on the digital divide theory, which focuses on discrepancies or inequality of access to the Internet and technological devices. The survey method is adopted, involving 1,287 respondents sampled conveniently from the 13 faculties of the Ahmadu Bello University Zaria, Nigeria. Data was successfully retrieved from 1047 respondents, representing 81.9% and was presented and analyzed through descriptive statistics. The findings revealed that the most significant challenges facing users of web 2.0 platforms are the high cost of data, and an unstable power supply. The result indicates that the most used social media by the academic lecturers of Ahmadu Bello University is WhatsApp, while the most used educational resource site is ResearchGate. The study recommends that the challenge of the high cost of data should be solved by providing uninterrupted broadband and free Internet facilities. The qualitative method should be used to further this study to have users of these platforms from more than one institution.

本文调查了影响使用Web 2.0平台满足21世纪数字时代要求的讲师之间知识共享的挑战。知识共享是人们之间技能，思想，经验和理解的交换。该研究基于数字鸿沟理论，该理论关注于互联网和技术设备的访问差异或不平等。采用了这种调查方法，从尼日利亚阿扎马德阿马杜贝洛大学的13个系方便地抽取了1,287名受访者。从1047位受访者中成功检索了数据，占81.9％，并通过描述性统计数据进行了呈现和分析。调查结果表明，Web 2.0平台用户面临的最重大挑战是数据成本高和电源不稳定。结果表明，Ahmadu Bello大学的学术讲师使用最多的社交媒体是WhatsApp，而教育资源最多的网站是ResearchGate。该研究建议应通过提供不间断的宽带和免费的互联网设施来解决高昂数据成本的挑战。定性方法应用于进一步研究，以使来自多个机构的这些平台的用户受益。