If something confuses you, post and I'll elaborate.
I did this with a friend by accident a long time ago, and again a few minutes ago in a test to see if I could still make it work. It did~

1. The CREATOR of the BLOG POST with the username as its title must REMOVE the title in such a way that the URL of the blog post is changed to the node URL. This can be achieved by renaming the blog to a single period ( . ) temporarily (the blog may be given the original title again afterwards if desired). Verycrazygirl details the process a little more here.

2. The USER experiencing the problem must change his or her DISPLAY NAME (My Account > Edit > Personal information) to whatever the LOGIN NAME is. For example, I would set the display name as "Aivilo"

3. The USER should save and view his/her "My account" page, which should now have the correct URL. The map link should function correctly after this, and you can remove the display name if you desire.



Also, as a side note, if you are trying to find someone using the map and it takes you to a blog post, try adding -0 to the end of the URL. If you get another blog post, try adding -1 to the end. Increase the number until you find the user account or a "Page Not Found" error.