These are some screenshots from my PC, Samsung Galaxy Tab, and iPhone 4. I'll test it on some other devices when I can as well. Everything seems to be running fine however the "Full Screen" view option does not work on any platform. Other than this I couldn't find any problems. Seems to be working well!
Something else I discovered, not sure if this was intentional or not, when on the main page (
http://beta.minecraftworldmap.com/) the sections under the featured map repeat.
First section: "Recent World Comments" GREEN BACKGROUND
Second section: "Recent Forum Posts" BLUE BACKGROUND
Third section: "Recent Comments" GREEN BACKGROUND
Fourth section: "Recent Posts" BLUE BACKGROUND
The sections display essentially the same information regardless. 1st and 2nd sections have larger fonts than the 3rd and 4th. The 3rd and 4th sections also display less updates than the first two.