Pros
Jobs can truly be fun and interesting! If you have GREAT time management skills, these can sometimes be worked into the schedule of other paying jobs (like a lunch Shop - get a paid lunch and paid Shop Job during the lunch hour of a regular job). That is a Win-Win! But they do take a LOT of time, then their reports must be filed - in a quick fashion!
Cons
Many jobs will only allow you to do ONE at a time (which being out on multiple jobs is where you can actually make a reasonable wage). Once you add your time and fuel in travel, time required to prepared the reporting required, time required to scan and download necessary documents or photos as well as submit your report(s) -all of which must be filed within a very short period of time, you are really making a few dollars an hour. When you realize this, you become disheartened.