I think that it may happen that the work with fonts works (copyright), since people can download them (why? Because fonts are deleted both in any file on your server and in the cache), which makes it illegal distribution for those who do not have a free license, which is largely one of the disadvantages of @ font-face, how could you fix this? Well, either code our copyright fonts, or continue to use free distribution fonts.
Check out this link, which you can read a little more about @ font-face performance, for example ... how many fonts you need to download, hope you find this useful!
http://www.stevesouders.com/blog/2009/10/13/font-face-and-performance/
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