Google has quietly introduced an API (application programming interface) for web fonts. This could potentially result in better — and also worse — web typography — depending on the skill and knowledge of the people who implement it. Unfortunately only a small minority of font users these day take the time to educate themselves about the print tradition.
Google’s font system involves referencing fonts stored at fonts.googleapis.com. The open source license fonts are then served up by the Google servers and should appear on your web pages without your needing to upload or embed them. There are instructions here.
Only a small number of fonts are available at present but no doubt the list will grow. I wonder what the type designer community will think about this.