The rapper is being sued by the Fat as Butter music festival in Australia after he failed to perform at the event last October, despite being paid AU$55,000 (£35,000/$56,000) to play the set.
After failed attempts to contact the star - real name Tramar Dillard - in person, Matthew Hourn, a lawyer for festival promoter Mothership Music, was granted permission to serve the claim via a link on Flo Rida's official Facebook page.
"Our process server tried arranging meetings with his agents and attended appearances in Melbourne - but due to his large entourage and security, we were unable to serve him personally," Hourn told Sydney's Daily Telegraph.
It's not the first time an Australian court has allowed a claim to be served via the social networking site, but Hourn believes it could be a first for a damages claim in New South Wales.
Meanwhile, Flo Rida recently debuted his new single 'Whistle', which will be the third official cut from his forthcoming album Only One Rida (Part Two).
> Paris Hilton collaborating with Flo Rida on next album
Watch the music video for Flo Rida's latest hit 'Wild Ones' below: