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Signs & symbols
Glyph
Social Black Buttons
Facebook
Black
512x512
Me, Facto
Feedburner
Firefox
Fiverr
flickr
formspring
Folkd
Forrst
old, Foursquare
Foursquare
Friendfeed
Friendster
Gdgt
getpocket
Github
google, bookmarks
Goodreads
drive, google
Buzz, google
play, google
google, Hangouts
google, talk
plus, google