I've just heard about it, no idea if it's legit, given that Anon have, on occasion, linked unwitting browsers into joining the LOIC, I'm not willing to go there myself 
Anyway, it's Anonymous' replacement for Megaupload.
"Servers are being set up in Russia, according to the new website's welcome page, to provide an alternative file-sharing service called Anonyupload."
Source: http://www.smh.com.au/it-pro/security-it/anonyupload-faceless-group-steps-in-after-kim-dotcoms-arrest-20120124-1qewy.html
Anyway, it's Anonymous' replacement for Megaupload.
"Servers are being set up in Russia, according to the new website's welcome page, to provide an alternative file-sharing service called Anonyupload."
Source: http://www.smh.com.au/it-pro/security-it/anonyupload-faceless-group-steps-in-after-kim-dotcoms-arrest-20120124-1qewy.html