Just to clarify ... it sounds to me from what you've shared so far that you have just terminated someone whose child was a doll but the parents for some reason required termination, you have than since found out that the child has been in several daycares before you and likely provider terminated as well and now you are wanting to give others in your area a 'heads up' so they can make an informed decision to take them or not based on past behavior?

I empathize with the desire to give others a heads up ~ however agree that posting negative things online about clients comes with risk if the person you are discussing 'sees it and recognizes themselves' and does not agree with your perspective of things as it could cause trouble and negative word of mouth advertizing for your business should they bad mouth in the community about you.

A compromise for posting anything openly would be to post your 'general location' for members because this is a Canada wide form and you could be from anywhere at at any time there are lots of clients seeking 'immediate' care so that would not be defining enough and you could get bombarded with hordes of messages asking you? That way members in your area who are getting inquiries for immediate care could send you a message and ask?

I also agree with the practice of asking all potential clients if the child has been in the care of someone other than the parents .... specially when the child is over a year ~ this is something they also do in many childcare centres on the intake form so it is not 'abnormal' thing to do and has many valid reasons for asking including to find out about stuff like this

That way if the answer is yes you as the provider can than probe further with how that experience went for the child, why the relationship ended and so forth to get their side ... and if they have been in 'daycare before' verses having been with grandma or what not would the clients be willing to provide provider contact info for collaborating with the past provider on what worked well for them helping the child adjust to the program and so forth.

IMO if the client is 'leary' of providing contact information than you can use that information to help form your judgement of is this going to be a GOOD match cause typically speaking someone whose relationship ended on a positive note is not going to be reluctant to share contact info that but someone who screwed over the provider is! If they actually DO give you the contact info make sure to inform they they need to call the previous provider and give permission for her to release information about the child otherwise she likely will 'refuse' not knowing who you are or how you got her information