RTB Icons - What are the Icon's that RTB uses?

[Miracle]

For there site, and GUI, and ect.
I know they didn't make them because awhile ago I saw them on a site somewhere else. Is there anywhere else you guys have seen them put up publicly?

IDK who actually made them, but I'm pretty sure they are not unique to RTB

[Ad Bot]

[Moonstar Akemi]

Errr.. They're probably just default website icons, I guess..

[dargereldren]

famfamfam's Silk Icons.

[Lesrock]

I've seen these icons in gmod.

[Demian]

I've seen these icons in gmod.

Those icons are very popular, they're everywhere.