Font Awesome, the pictographic font designed for use with Twitter Bootstrap
I don't know if it would make sense for your plans, but have you considered looking into getting fontawesome added to Google's Webfonts collection? That could help drive mass adoption. Here's their submit form: <a href="https://services.google.com/fb/forms/submitafont/" rel="nofollow">https://services.google.com/fb/forms/submitafont/</a>