Open Sans in action on getaviate.com

.content-1 { font-family: 'Open Sans', Helvetica, sans-serif; font-size: 28px; font-style: normal; font-weight: 600; letter-spacing: -0.9800000190734863px; line-height: 40px; text-transform: none; color: #0D0D0D; }
.content-2 { font-family: 'Open Sans', Helvetica, sans-serif; font-size: 19px; font-style: normal; font-weight: 300; letter-spacing: -0.2849999964237213px; line-height: 26px; text-transform: none; color: #333333; }
Open Sans is available from Font Squirrel, Google Web Fonts, MyFonts and Typekit.
Found by @mikesten on 5 Mar 2014.

Liked by:
@mikesten @mishapivo

Open Sans