Its over guys... lets look for something else

I mean custom audience (by scrapping User IDs) is gone for good!
Facebook have changed this on August/2014.
You can only target custom audience, who are
your audience (i.e. have interacted with your facebook App and/or website...etc).
It makes sense of course, as it wasn't fair to target someone else's audience... but I have to add that with the new changes, custom audience targeting isn't really effective or even meaningful.
If I'm only allowed to target my own audience.... well, I could have targeted them using my own channels...
I mean things like, display messages in my facebook apps... or display Push notification messages for Android/iOS apps (which had to be facebook apps to advertise)...etc..
So, it's not very affective to go after my own audience inside their timelines too

my $0.02