After you finished your MinMap in MindMeister, you can save your drawing in different format (depending on your license: in Premium license you have more option).
Saving
Up to your map you see a banner with commands, among them the "Export". Click it!
You see here the options rolling down the list:
You have to know, that all the options on the picture are available only if you pay for Premium license.
Choose the ones you need and save it.
Sharing, embedding
To share the map you find the command bottom at the left corner of the screen. By clicking it you can share map for collaboration with others, or you can publish it on any other place, like your blog embedding the map inside your online text.
For embedding, you should choose "Publish", and then "Embed map..." from the panel!
You will be navigated to another panel, where you find a code, and several options, like the size of the picture.
Copy the code (for example by clicking CTRL+C), and go to the page in your blog, where you want to insert it. (Do not bother with its content!:))
In your blogpost you should change from "Edit" mode to "HTML", than paste the code (for example by clicking CTRL+V) and save the post. You will see the interaktive map in your text. Your visitors can even edit the map - it is depending on the options you choosed from the options!