No, not really popular, or at least it didn't used to be. Like I said, the roads that are there don't really go anywhere for the most part. Just industrial type building close to the airport, the old bunkers further down, then miles later it dumps out on south OBT in a warehouse type disctrict. But if you were searching Google Earth and trying to find a wooded area in the Orlando area it might stand out.
As far as why it hasn't been searched earlier... well, there's a lot of ground to cover. A LOT of ground. Does anyone know how closely they can determine her whereabouts based on the pings? I mean, can they determine where she was down to a matter of yards/feet, or is it more a matter of "we think she was within so many miles of xyz tower"? It would be a hard area to search without narrowing her location down more.