How many font families are available for Google Font API?

I think the service is great but are these few the only fonts that are available:

http://code.google.com/webfonts

?

Or are there others and if so where c开发者_StackOverflow中文版an I see them?

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Currently those are the only ones available. You can host your own opentype font, however, using the following CSS.

@font-face {
   font-family: Kabel;
   src: url("ItcKabel-Demi.otf") format("opentype");
}

h2{
    font-family: Kabel, "Lucida Grande", Lucida, Verdana, sans-serif;
}