Since I reside in Central Florida I'm a huge advocate for Central Florida.  Speaking from the Commercial RE side which includes Apartments, Retail, Industrial, Office and Hospitality.  The volume of properties being sold and inventory availability are signs of this market getting back on its feet. 

Here are a couple of stories to validate this.  Provided that companies like Wal-Mart are steady growing in this area indicates
more people are continuing to move to Florida and work in Florida.

Wal-Mart keeps growing in Central Florida
http://www.bizjournals.com/orlando/blog/2012/06/wal-mart-keeps-growing-in-central.html?ana=RSS&s=article_search&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+bizj_orlando+%28Orlando+Business+Journal%29

Where does this person claim they are working from?  I seen reference to Orlando but I never heard of this guy…..   I work  with a National firm in downtown Orlando myself.   Whomever he is and if in fact he lives in Florida; you can verify if he is licensed and or has any complaints against him by visting this website:  https://www.myfloridalicense.com/wl11.asp

example:  you put in my name John R Keeler and you can verfify the licensing and current status.  

If this guy is not from Florida; there should be a website in the state he works from that has licensing information.   If he is not licensed as a Real Estate Agent / Broker then there certainly could be some reason to be very concerned here.

Jacki, *
I'm an agent/broker however I work in the USA.  Nevertheless, real estate is real estate no matter where it may be located.  My firm undergoes extensive training litterally non-stop on a weekly basis.
 
Basically, to answer your question directly (and I dont mean to offend any other RE agents here)  The reason Real Estate does not sell is for one of two reasons (sometimes both):
1.  Either the property is not priced to meet the market and the owner needs to conform to the market…..
or
2.  Either the Agent is not doing their job.

example:  When I set down with a new client to talk about taking a listing to sell their real estate I provide them with a written marketing plan and I review that with them very thouroghly.  This way the client understands exactly what I will be doing for them each step of the way and it allows the client to have accountability over the agent.   In the end, both client and agent have responsibilities; the agent's is to market the property and the client's is to counter all offers timely and to be willing to explore that fact that the real estate may be priced outside the possibility of being sold compared to the market……
Best of Luck