Even though I said Nelly, I would say Flo-Rida is Nelly 2.0. Street dude who wasn't known for lyricism or even good beats but has hits and made catchy songs.
Reason why I wouldn't say Nelly is that his influence is undeniable
1) put his city on the hip hop national map......put his crew on, JD snatched up an affiliated act, Chingy, and blew him up
2) embraced and made "country" something to claim.....where you started hearing the word used by other artists, and countrified acts were signed like the "Nappy Roots"
3)AF1s were always big in metro area. Jay Z blew them up more nationally. Nelly "My Adidas'd" AF1s to his large pop audience