Twitter – Pico Alphabet (Modified)

Google – Catull BQ

Yahoo – Yahoo Font

Flickr – Frutiger Black

Digg – FFF Forward (Modified)

Last.fm – National (Modified)

Skype – Helvetica Rounded Bold

Technorati – Neo Sans Medium

Youtube – Alternate Gothic No. 2

Facebook – Klavika (Modified)

Cork’d – Triplex

Vimeo – Black Rose

Grooveshark – FF Nuvo

Envato – Agenda Italic

Tuts+ Network – Lubalin Graph

Purevolume – Avenir Book

Basecamp – 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

Revision 3 – VAG Rounded Black