The requester checks your responses and rates your skill in performing this type of task. Skills are rated on a scale of 0 to 100 points. To view your skill scores, go to your Profile.
Skill levels allow the requester to offer tasks to users who do a good job. The more skills you have and the higher your skill levels, the more tasks you will have to choose from.
Requesters can set the price depending on the skill level. The higher your skill, the more money you will get for the task.
If you don't do well on a certain type of task, you receive a low skill level. You will lose access to such tasks.