At Sol's funeral an old lady in back continually interrupted, saying, "Give him some chicken soup." Finally, the rabbi got fed up and told her: "Madam, the man is dead. Chicken soup is not going to help!"
Her reply came back: "Well, it couldn't hoit!"
White lists are like that. They don't really do much but they couldn't hurt.

by a provider and never regretted not having any. I screen with indies using references from other indies.  If that's not sufficient, I draw a line through their name and go to the next one on my list.  

 
It's equally possible for a customer to have reviews and not care about white lists, or not have either.  There are also some customers that have white lists, but no reviews.

now? Not so much. Between the Whitelist and P411 Okays,shit that was all I needed. But now, I'm not on P411 and the Whitelist is just a reminder of all the young ladies who thought so highly of me to honor me with their own little shout out.
And by the way, I never asked to be Whitelisted...they just pop up a few days after our little "escape". But they were helpful...back in the day.

Don't have any whitelist, no p411, never asked, never will ask. I don't use references either. Pretty much any time topic has come up with providers about background, they've all told me I have good reviews associated with my phone number, so no need for references or deposit