I participated on digg.com sporadically, and only when drunk; nevertheless, I can confidently attest that none[1] of the content in my 'archive' was ever associated with my digg.com account (and therefore, obviously, none of the actual posts and comments I made on digg.com are present in the archive).

[1]: except this one specific bit: "user":{"username":"masonmark","user_id":"298680"}