"Chief Keef! You need a bank account and direct deposit for your fat stacks," Neely's tweet suggested, referring Twitter readers to a link to a city "financial empowerment" site and Bank On Chicago, a cooperative effort to provide those without bank accounts with "easy-to-access" checking accounts.
The tweet has a photo of the rapper, whose real name is Keith Cozart, brandishing a stack of Benjamins.
"I would love to take credit for [the tweet]," said Lilia Chacon, the treasurer's director of public affairs, but she said the idea came out of a senior staff meeting.
"I don't know who pulled up that picture," Chacon said Friday, but "the connection was 'there's someone who can use direct deposit.'
"All kidding aside, it really is a huge initiative," Chacon added. "The treasurer has made it her mission to stop people from losing so much money at these check-cashing places," as well as encouraging them to avoid loss through home theft or fire.
The treasurer's site also has tips on budgeting, improving credit, reducing debt and increasing savings for a rainy day and retirement — not among Chief Keef's usual rap themes.
"He is a very colorful guy," Chacon said. "We thought that was a way to tap into a new demographic."
"We haven't heard from him," Chacon said. "We thought, maybe as part of his community service, he'd like to do a [public-service announcement] and, you know, wave some of the money around and encourage people to put it in a safe place.
"Then this morning we decided that we really didn't think Chief Keef was a very good ally for the treasurer. We did get a good laugh out of it," she said.