About Glyphicons From Bootstrap docs (http://twitter.github.io/bootstrap/base-css.html#icons http://twitter.github.io/bootstrap/base-css.html#icons): "Glyphic

About Glyphicons From Bootstrap docs (http://twitter.github.io/bootstrap/base-css.html#icons http://twitter.github.io/bootstrap/base-css.html#icons): "Glyphicons Halflings are normally not available for free, but an arrangement between Bootstrap and the Glyphicons creators have made this possible at no cost to you as developers. As a thank you, we ask you to include an optional link back to Glyphicons whenever practical."