Many wordpress theme developers need to download wordpress logo font or similar font. From following links you can download the wordpress font.
I found some fonts which are similar to wordpress logo font. On following URLs you will find the wordpress fonts.
http://www.myfonts.com/fonts/linotype/dante-mt/
http://www.fontyukle.com/listele.php?sayfa=7&harf=D
http://new.myfonts.com/fonts/emigre/mrs-eaves/
