I worked as an Internet Assessor for over 3 years. The job is a good placement for people who need to work from home (parent or student) or are in the middle of a transition. After 6 months you can get a slight increase in pay (if you are good enough), but no other advancement or benefits.
They recently changed from independent contractors to part-time employees, so that is a definite positive. No work "environment", but the managers keep up regularly with e-mails and are overall good to work with. They seem to actively care about you staying on board, which is why I gave 3 stars on job security.
After the first year the job became incredibly tedious and it felt unrewarding. The pay is also not good enough if you are single and trying to move on with your life.
Good parts: You get to view weird things that other people search for. You also work to improve AI for Google systems used by millions of people.