I made shadyurl! The subdomain feature in this is great. Also cool it has an API. Though with the amount shadyurl was abused by phishers, I'd be interested to see how long an API stays viable.
It's kind of wild that "SHADY URL" is something phishers want to use. But, in the end I guess it's all about finding a domain that isn't tied to them?
Similar to 419 scams, shady links/propositions are a good way to select the people who are easy to trick.
Yeah that's my best guess. I was shocked how much it was used for scams. Might also be possible the link is so suspicious looking it's actually more intriguing to click.