From Volition.com re Monterey Mystery Shopping:
"They use CTCSS for scheduling, and also Prophet for reporting. I completed a couple shops for them, and they pay on time as well. The scheduler was fantastic, the reports need detailed information, but everything was straightforward. I will be happy to shop wth them again." They are apparently a member of the MSPA, which adds some legitimacy.
[Note: CTCSS is Coast To Coast Scheduling Services. Generally when a company is a member of the MSPA, uses a Prophet, Sassie, ShopMetrics or ClientSmart website or uses a major scheduling company, you can feel fairly confident they are legitimate. Whether they are in sound financial condition to pay shoppers is a totally different issue. And also many legitimate companies are NOT members of the MSPA and/or do not use one of the above mentioned reporting websites and/or do not use scheduling companies, but as a general indicator, when you can find no other information about a company, one of those attributes can help sort the scam from the real.]