Default avatars are modified from an image by Francesco 'Architetto' Rollandin.
http://www.openclipart.org/detail/34957

Some icons by Mark James
http://www.famfamfam.com/lab/icons/silk/
http://creativecommons.org/licenses/by/2.5/ Creative Commons Attribution 2.5 License

Lato font by Łukasz Dziedzic (http://www.typoland.com)
SIL Open Font License, 1.1 (http://scripts.sil.org/OFL)
Prepared for web with Font Squirrel (http://www.fontsquirrel.com/fontface/generator)