Florida Unschoolers -- the main group on Facebook; if you ask to join the Facebook page, answer the screening questions; all posts are screened.
Other Facebook Groups that may be of interest -- these are run by parents and not monitored by Florida Unschoolers:
FL Special Homeschool Families
Unschooling Florida Unschoolers
Not Exactly Florida Unschoolers
FU Unmoderated Discussion Group
There are also some Florida Unschoolers and other homeschool support Facebook Group pages.