Look at the interested party FB profile for photos… If u do not see a photo of a cat/dog there that may mean they may not be cat/dog lovers and do not treat pets as family.
Ask if they have small children, how many and ages… here is why. Often kids are not taught to respect animal and beat upon them, injuring them.. or if the animal grows up it bites them and then it ends up in kill shelter and eventually killed.
Ask if they owned animal before or if they currently have animal and what breed. You do not want chi pet with adult German Shepard or similar.. big animal can crush small puppies.
You want to know if they are able to financially take care of animal, not just food, but also medical if the need be.
If they are taking in a big animal but live in apartment that is a no… and if they are unstable and move.. and place they are moving to does not take that animal then animal will end up being re homed.
Also ask to do a home check if the potential adoptive parent is in the same town.
If they currently have pets, ask to potential adopter to show you vet records.
Search Face Book posts under the potential adopters name… that will pull history and show you if that person had any posts on adopting or rehoming pets in the past.
Always encourage adoption in pairs if you have multiple kittens as they thrive better in pairs ! Below are links to different articles on why it is better do adopt in pairs. You can share this information with potential adopters.
Why Two Kittens Are Better Than One
Is It Better to Have Two Cats or More ?
Best of luck finding a new addition to your family !