Yahoo –Yahoo Font
Basecamp – Whitney
Bebo – Neuropol (Modified)
Digg – FFF Forward (Modified)
Engadget – Engadget Font (Close Match)
Facebook – Klavika (Modified)
Flickr – Frutiger Black
Google – Catull BQ
Last.fm – National (Modified)
Linkedin – Myriad Pro Bold
Skype – Helvetica Rounded Bold
Technorati – Neo Sans Medium
TMZ – Amelia
Twitter – Pico Alphabet (Modified)
Vimeo – Black Rose
Youtube – Alternate Gothic No. 2