I tried ZhGoogleMap, but I don't know if $ 200 credit will be enough in the future? the site is for non-commercial association, I would prefer to use ZhOsmmap free.
Now I'm mapping the contacts. With InfoBubble I go to the contact card with information and tags.
Every contact has tags (agricultural products).
One idea was to map the tags and then open a contact card, but I think it's too complicated.
Perhaps the simplest thing is to display the tags for each mapped contact in InfoBubble or infoWin. mah ...
I develop all my extensions for free, and when I have enough time. You don't need to credit. I do not add features for money, because I don't guarantee I have free time , but donation for support my developments is good idea.
I can try to add this ability (to show it in infowin content) on this week (I hope). And I'll post here when I will do release. You can check if it is useful or some other way to see.
As for displaying map by tags - it can be done too (by development). I implement tags for placemarks, but don't use it yet. I thought to create plugin call by tag list. I think I can try to add this ability firstly, and after that implement this call in component/module call (its properties)