Climbing over the Great Firewall

Got this email recently about our Qwika product which includes Wikipedia mirrors. This is the sort of mail that makes it all worthwhile: 

I am in china .maybe you know ,the wikipedia was blocked in china . I visited your web site and i find that i can read the articles from wikipedia by clicking the "cached "in the searching results .it is wonderful !now i can read the full text but no images . i very appreciate your work !

luck and happy !

It's also a good argument for free content being available through many sources, which is the spirit of the GFDL anyway.