If we can get it converted, tested, and working, (in case we can't) we'll update the thread.
Keep an eye:)
BTW, if you are unable to test because you don't have a Brother printer, I'd be happy to test for you.
Updated again... LinkedIn for PlayBook
Yelp is a no go. I am still looking at the others.
I used this link to load Android apps on my Playbook Blackberry Playbook Android Apps | Good e-Reader Android App Store - Playbook App Store - We support Kobo Vox, Kindle Fire, Blackberry Playbook and More hope it will be useful.