Funny, I have yet to experience any sort of scamming/phishing/anything through Facebook, and they've had my cell number on record since I got their iPhone app ages ago.
Nobody who isn't already my friend can view any of my personal information, and nobody can view my mobile number on my personal FB page. Regardless, it's not like my contact info is some deeply hidden secret: my cell phone number is on my website, my FB business page, and who knows how many other websites. I mean, the point is for people to be able to reach me, right?
As far as lenders/creditors using Facebook to find deadbeats and assess applicants, that's nothing new. I've used Facebook, Myspace, and various other social media websites (past and present) to screen people potential employees and clients for years. Frankly, I find it astonishing that this is just now becoming news to people.