MongoDB has emerged as a leading NoSQL skill, growing exponentially due to increasing returns in platform markets. The more people that use MongoDB, the richer its community becomes, attracting more people to learn and creating more jobs. According to 451 Group's analytics, MongoDB now accounts for 49% of all NoSQL technology mentions on LinkedIn profiles, extending its lead as the most popular NoSQL database. This growth is attributed to the exponential increase in the number of users, which enriches the community and attracts more learners, ultimately creating a higher demand for professionals with this skill.