Hi Luoy. I am using your solution for showing all posts on one map and that works well. I will add a scrolling list of all the vendors the side so the user can click it and see the location on the map (I will use the example that you guys use for your staff members on the website).
ISSUE: when a pin is clicked, the advertiser's name comes up and you can click it to go to their CPT. there is no way to collapse that pop up unless you click another pin or refresh the map. Is there code I can add so that the escape key will work or is there some other way to make the advertiser name disappear if the user clicked wrong? I know I can click another pin but sometimes the pop-up name covers the neighboring pins. Here is the page with the map: http://emperorofthefreeworld.com/ic/county-map/
Regarding the individual thumbnail maps on the CPTs, I have changed my strategy and instead I will use a "directions" link that will push to Google maps. You can see it here:
http://emperorofthefreeworld.com/ic/search-results/?wpv_post_search=straw&wpv-category=0&wpv-restaurant-type=0&wpv-health-and-beauty-type=0&wpv-medical-dental-types=0&wpv_filter_submit=Find+It!
and
here: http://emperorofthefreeworld.com/ic/advertisement/strawtown-jewelry/
thanks