I use a screening form which I have found does weeds out time wasters. I can also see it being a deterrent in some ways, but it is My preferred way to screen. I charge a processing fee that I ask to be sent in order to start the review.

I've also asked for photo ID and verification photo (selfie holding something with today's date). Although, I have since stopped asking people to send their IDs because some would send with ALL of their info even though I asked them to redact some of the PPI. I would let then know that all I needed was to see their photos, name, and DOB, but people would still send the IDs with all their info on full display.

I ask for references, but I will only reach out to a provider I don't know as very last resort. It is very rare that I receive a message back from another Domme when I let them know I'm conducting a screening. It is a shame but (as mentioned) I honestly don't know if I would trust another Domme's reporting, especially if I don't know them-- this profession can get possessive (not all, of course but I've seen things).

Some other methods I've exercised:
2-step call to location
Employee call verification
Review sites (Date-check, TER, Mr. Number, VerifyHer)
SM checks - Twitter, FB, Linked-in (I created a separate Linked-in account because Linked-in reports who's viewed your account)

My form asks for a number of things, so it will depend on what they provide. Once I'm done reviewing I'll call them to let them know they've been approved or if I need more info. That phone call lends a lot of information too, but whatever feelings I get from talking to them is based on instinct.

If they are a NEWBIE the biggest things for Me are the verification photo, email and phone number.

If anyone is interested in seeing My application, it is on My website but if you DM Me I will send you the link directly.

.02