Many businesses blacklist FPL/0BSD, Unlicense, and especially WTFPL. Those that blacklist CC0 for software do so for patent-related reasons, and not, in my exp

Many businesses blacklist FPL/0BSD, Unlicense, and especially WTFPL. Those that blacklist CC0 for software do so for patent-related reasons, and not, in my experience, because it's styled a public domain dedication. CC0 actually includes an extensive license, as fallback if dedication doesn't work. When I wrote "personal work", I meant work for which the developer has control of licensing. Not code for an employer or client with their own licensing policy.