Project Info
http://sourceforge.jp/projects/mplus-fonts/

M⁺ OUTLINE FONTS open forum
http://sourceforge.jp/forum/forum.php?forum_id=3403

mplus-fonts-dev ML
http://lists.sourceforge.jp/mailman/listinfo/mplus-fonts-dev

M⁺ BITMAP FONTS
http://mplus-fonts.sourceforge.jp/mplus-bitmap-fonts/

M⁺ LOG
http://mplus-fonts.sourceforge.jp/cgi-bin/blosxom.cgi

FontForge
http://fontforge.sourceforge.net/

The Unicode Consortium
http://www.unicode.org/

Typekit - M⁺ FONTS
http://typekit.com/foundries/m-fonts

Wikipedia - M⁺ FONTS
http://en.wikipedia.org/wiki/M%2B_Fonts