Hi Banana :)
Great question. You are very much right that these are 'adverts', and therefore the children will be presented in as positive a light as possible. Although I've seen some pretty honest profiles in my time, often any tricky information is in SW code. Also, being short profiles, watch out for things they highlight or emphasise, because that is obviously felt by someone to be important
Yes, I think if a profile mentions routine, structure and control, attachment issues are very likely. Not necessarily disorganised attachment, but attachment issues in general. Ditto 'strong willed, determined and can be defiant'. To me, that's another way of saying 'control issues' and 'challenging behaviour'
I would watch for things being repeated e.g. X is a very active and energetic child.....needs an active and structured family. In a profile with a word limit, repeating the same idea several times instead of mentionning something different suggests it's important
DD2's initial profile said she loved her food - in her case, this was code for 'hoards it and would eat 24/7 if she could'
Don't get too hung up on minor details...they often put things in about favourite foods, colours, activites...basically, things which tend to change and sometimes frequently. Look for a more general idea of their personality and issues - which can be hard depending on how well it's written!
Even then, those profiles can give a misleading idea about a child. They may well not even be written by someone who knows the child. They might highlight something unimportant, or fail to mention something important etc. They won't mention very sensitive information, and they can't usually convey enough to tell you whether you'd be a good match, unless there are very obvious serious issues you can't cope with. So, if you feel like this is a child you could parent, then enquire further. The worst that can happen is that their CPR lets you know that isn't right. Your SW might know more than is in the profile and may be able to advise of the bat whether child Y is high needs