As has been mentioned by others, I still notice that new guests send inquires to me who dont have their hometown filled out, and 80% of the time dont have their profile description filled out. It's part of my script sadly to say "oh I see you have an incomplete profile description, please tell me a bit about yourself so we can get to know eachother", but its very awkward to ask where their coming from, which is always different to their hometown or where their documentation states as their primary residence.
I've also seen many older exisiting accounts for both hosts and guests still dont have a photo of their acutal faces. At Airbnb Open 2015 they stated they would require photos of people's faces. Not sure if that was a policy only for newly created accounts but it should apply to all Airbnb account holders!