20 formats • The ‘unknown format’ is 19th – Those 5,015 extensions • Flash stands out MIME Type # Resources text/html 1,995,507,185 application/xhtml+xml 840,627,471 image/jpeg 242,764,847 text/plain 150,670,343 image/gif 133,610,487 application/pdf 23,965,322 image/png 19,865,229 application/rss+xml 11,528,135 application/x-empty 8,551,502 application/xml 6,387,147 application/x-shockwave-flash 3,835,244 application/msword 3,720,032 application/atom+xml 1,381,932 image/vnd.microsoft.icon 1,305,558 application/vnd.ms-excel 1,201,725 application/gzip 988,491 application/zip 948,112 audio/mpeg 751,160 application/octet-stream 598,836 application/rdf+xml 511,301