Google – Catull BQ
Twitter – Pico Alphabet (Modified) or Close Match (Modified)
Facebook – Klavika (Modified)
Grooveshark – FF Nuvo
Youtube – Alternate Gothic No. 2
Yahoo – Yahoo Font
Digg – FFF Forward (Modified)
Cork’d – Triplex
Vimeo – Black Rose or Bello
Envato – Agenda Italic
Tuts+ Network – Lubalin Graph or ROCKWELL
Last.fm – National (Modified)
Technorati – Neo Sans Medium
Flickr – Frutiger Black
Purevolume – Avenir Book
Basecamp – Whitney or Interstate Bold.
Engadget – Engadget Font (Close Match)
Hulu – Futura MDd BT (Modified)
Bebo – Neuropol (Modified)
TMZ – Amelia
The ONION – Eagle Bold
Mapquest – Cheap Motel
Linkedin – Myriad Pro Bold
Skype – Helvetica Rounded Bold
Revision 3 – VAG Rounded Black
Teclado de la MAC - VAG Rounded por Gerry Barney
Goplan - ITC Officina Sans
Para terminar esta pagina ofrece la posibilidad de detectar en base a la imagen de un logo que fuente es:
http://new.myfonts.com/WhatTheFont/