"Find talent everyone else is missing."
Once knew a guy online that had done something stupid when he was a teenager. He was a big, scruffy guy and altogether would've been a hard sell to an employer. But he was exceptionally smart and funny - would make a great colleague - and I bet many employers would've overlooked him.
The general rule with Silicon Valley and San Francisco companies is to take everything they say in public or through their carefully worded P.R. with a grain of salt, and actually find out first hand if they practice what they preach hiring outliers with respect to diversity, records/credit/etc, non-Ivy League degrees, etc.
Some do, yes. I shared an office who hired ex-cons who got a huge rebate on wages in our municipality (up to 55%). He had 2 or 3 doing office work. Very pleasant people, not that large of an applicant pool however. If we had been hiring at the time (bootstrapping), I would have definitely taken advantage.