Pros
Able to work on your own schedule. I used Wonder for income after I had been laid off, and ran into a lot of scams out there. At first, I thought this was going to fall into that category as well. But it didn't. It took a couple of months to learn the ropes - the format is very specific and you need to follow the formats - and they are all provided. Once I learned the formats, and learned where to find information, I was more than covering my bills, and was able to have a bit of a social life again. When you start, it will take a while to get a sourcing or writing job completed. Once you learn the tricks, you'll be able to complete jobs in about an hour. Make sure to stick to topics you enjoy or want to learn about!
Cons
It is painstaking starting out. While there are templates, and your work gets reviewed, it can be upsetting if your job gets kicked to another person. Reviewers should not only review, but instead mentor. While it may seem like that's what they are doing, sometimes the reviewers comments don't help very much, or they haven't read the important details pertaining to the job. Something changed with the website which doesn't allow me to see sourcing jobs available - I don't like being given a topic. I work full time, and when I do get to work on Wonder, I want to be able to pick something I enjoy!