Are fonts found in "Font Folio 11" legally eligible for web embedding?
I second dhosford's recommendation. TypeKit requires you to subscribe but they host a wide library of legal web fonts on their servers so you don't have to.
Google Web Fonts are free but many of them lack all the necessary file types to display properly in all devices.
|FONT||BROWSERS THAT SUPPORT THEM|
EOT = Internet Explorer 4+
TTF = Mozilla 3.5, Safari 3.1, Chrome 2.0, Opera 10
OTF = Mozilla 3.5, Safari 3.1, Opera 10
SVG = Safari 3.1 iPhone, Chrome 0.3, Opera 9.0
WOFF = Mozilla 3.6+