Open Sans in action on thetileapp.com

.header-1 { font-family: 'Open Sans', Helvetica, Arial; font-size: 27px; font-style: normal; font-weight: bold; letter-spacing: normal; line-height: 33px; text-transform: none; color: #FFFFFF; }
.content-1 { font-family: 'Open Sans', Helvetica, Arial; font-size: 20px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 32px; text-transform: none; color: #FFFFFF; }
Open Sans is available from Font Squirrel, Google Web Fonts, MyFonts and Typekit.

Try this combination out in Pair and Compare.
Found by @mikesten on 8 Jul 2013.

Liked by:
@mikesten @mcmuffinz21

Open Sans