A micro job is a temporary, task-type job of all types, often booked through the Internet. Work may include online or in-person jobs, such as writing blogs, virtual assistant, handyman, nanny, website design, etc.
The income varies depending on the job and the fee charged by the micro jobs website. Micro job workers are independent contractors and are legally responsible for their actions.
The Internet changed how workers find jobs. Websites made it possible for workers with an Internet connected device (computer, smartphone or tablet) to find virtual jobs both in their current city and worldwide.
Source: Yaning from language.chinadaily.com.cn