What are good websites for finding farm land or rural land in Puerto R

I don't know any specific web sites for purchasing land. In Naguabo, which is on the east coast (rural but close to the autopista), you will often notice "Se Vende" signs next to pasture land and abandoned properties in various stages of dis-repair. Most are located on off-the-beaten path roads like 970, 971 (where our home on 1.6 acres is for sale - see separate posting), and other side roads that meander north toward Ceiba and Fajardo. I recommend you drive around the area you are interested in, stop at local ferreterias or calmados, and ask the locals. Almost everyone on the island knows someone else or has a relative who has something for sale. A word of caution about purchasing property and particularly land - seek the assistance of a lawyer and make very sure you get clear title because even the most minor dispute will take years for you to resolve. There is much beautiful property on the island - good luck with your search.