How to Report Additional POI's?

Hi everyone:

I just gave myself a nuvi 650 and so far I love it. I have already downloaded many POI files and ICONs from the POI factory. I split my time between Puerto Rico and Tampa. To my pleasant surprise there are some genuine POI's from San Juan but I have noticed that some of the larger POI files such as Walgreens and COSTCO for example are missing locations. Do I report these additions one at a time in these forums? I can get the GPS coordinates from my nuvi as I drive to the different locations and I know how to add the locations to the files I have downloaded but would like to share the rest of the info I develop?