@Customer_Service_Police
On my spreadsheet I have the name of the company, the clients ( stores ), my acct log in info, when they pay, and if they don't have any shops in my state I highlight that and put in the date ie: no shops as of 7/15 and update that as I go along. I have so many companies that I registered for that it's hard to remember which companies work with which stores, and as new shops (stores) pop up I update my spreadsheet. It helps to know if I have a toy store I'm shopping for in the mall, I can go to the spreadsheet and see which MSCs have the pretzel shops, or the workout clothes shops or the sweet snack shops etc, so I can go to that MSC and see if there are any shops open around the same dates etc. I'm also pretty new so I'm sure after a few months we will have it down and can recall which MSC is associated with which stores baring no changes in contracts which is inevitable I think. Plus it is hard when so many of them have similar names all starting with Customer and Shopper's, then there is Realty Based, Realty Check!
On some of the systems that is easier to search ( sassie) I sometimes search the whole country to see what type of stores that MSC contracts with and if it is store that is in my area I made a note to see if that local branch will be shopped in my area in the future.
Love Vlade's tip, but too late now, to go and change so many profiles with new email address. At this point I think it is probably easier for me to change my personal email to something else, I have less friends that email me than the emails from all the MSCs.