Avenir, Century School with Open Sans in action on mijlo.com

Under the hood

.header-1 { font-family: 'Century Schoolbook', serif; font-size: 37px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 37px; text-transform: none; color: #736963; }
.content-1 { font-family: 'Avenir Heavy'; font-size: 11px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 15px; text-transform: uppercase; color: #736963; }
.content-2 { font-family: 'Century Schoolbook', serif; font-size: 37px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 37px; text-transform: none; color: #736963; }
.content-3 { font-family: 'Open Sans', sans-serif; font-size: 12px; font-style: normal; font-weight: normal; letter-spacing: normal; line-height: 24px; text-transform: none; color: #736963; }

Avenir is available from Fonts.com and MyFonts.