There were some old threads about it but I can't find them. There are definitely challenges, though, such as reports that are so badly written that you can barely make out the meaning and shoppers not responding when clarifications are needed.
I edited for a couple of years. The pay is low. I liked it because it made me more aware of what went into turning into a great shop. I did it more for the experience than the money. I edited long casino and hotel reports.
Pros: You do not have to leave the house. You realize what makes a terrific shopper.
Cons: The pay is low. Every company has different requirements and believes their form of editing (grammar rules) is correct. You have to keep track of your work to ensure you are paid correctly. The flow of work is inconsistent through the month/quarters.