What are some alternatives?
When comparing UrbanFonts.com and Fonts.com, you can also consider the following products
Font Squirrel - Font Squirrel scours the internet in search of FREE, highest-quality, designer-friendly, commercial-use fonts and presents them for easy downloading. We don't have the most, but we do have the best.
Dafont - Archive of freely downloadable fonts. Browse by alphabetical listing, by style, by author or by popularity.
Google Fonts - Making the web more beautiful, fast, and open through great typography
Linotype - Linotype: Fonts for Desktop, Web & More
Typekit - This will change the way you design websites. Add a line of code to your pages and choose from hundreds of web fonts. Simple, bulletproof, standards compliant.
FontDaddy.com - The best online resource for free fonts. Freeware, public domain and open source fonts. Tens of thousands of free fonts for Mac and PC. Download for free!