All you have to do to share your map is upload it on any file sharing website like 4shared.com or mediafire.com etc. I use mediafire but you'll need to make an account on the site before being able to upload any files. Once you have an account on any of these sites you'll have to export your map in the map maker and copy & paste all the files from your exported map into a new zip folder and upload it to the file sharing site. From there you can distribute your map link to anyone you like.