See this page - www.happycow.net/north_america/index.html - I suggest that we have a dedicated section for "Central America & Mexico" - I had to twist my grey head walnut 3 times around to find El Salvador - it never crossed my mind to look in North America - from "Gringo in Viet Nam"
We've organized our listings by Continents. I believe Central America is always grouped with North America. If I'm wrong about that please let me know.
We could add, "including Central America" right under the words "North America" on the North America page if you think that would help.