"Map Implementation" page(available for registered users only) extended with 2 more ways of map implementation: "Source Code to Your HTML Page - Keep You Map Live" and "Source Code to Your HTML Page - Copy & Paste".
So actually we have 3 ways how to share a map created @ mapbuilder.net:
1. Put button or link to your site like this
2. Get html source code which will grab live map from mapbuilder.net
3. Get static html and paste it to your web page