Pros
This is a great platform for starters in the Online ESL Tutor world. You can get to help student improve their speaking and listening ability in the English Language. You can get to meet bright kids as well as professionals who are so eager to learn to improve their English Speaking skills. They have devoted their time and effort before and after school / work just to learn English as a secondary language. You can also choose to be a part time or full time in this line of work.
Cons
One big factor is that the tutors aren't well compensated specially for starters in this industry. Your rate will only around 2 USD per hour. Website for tutors is most of the time down because of heavy internet traffic. I hope they can address this website issue once and for all.