even the sites using one of these 3 CDNs probably specify aa specific minor version of jQuery from this list http://code.jquery.com/jquery/
(OK, so I doubt many sites are specifying the beta or uncompressed versions, but there's still a pretty good chance that somebody hasn't downloaded the relevant version from the relevant CDN recently enough for it to be in their cache, especially if they're browsing on their phone)
(OK, so I doubt many sites are specifying the beta or uncompressed versions, but there's still a pretty good chance that somebody hasn't downloaded the relevant version from the relevant CDN recently enough for it to be in their cache, especially if they're browsing on their phone)