Looking good!
I agree, more people should go through the wiki, type in the name of each banana they grow, locate the relevant page, and add their location to the respective map. Then do that over and over for each kind.
I'll create a special page that offers the preformatted code, I think that's hindering folks a bit. I think making it easier will help. First, though, in order for this idea to work, folks will NEED to add their location (or pin a nearby landmark) to the member map which is located at:
http://www.bananas.org/vbgooglemapme.php
stay tuned