I also do not consider the diplomatic cables particularly significant, their release mainly creates personal embarrassment to the diplomats who must apologize in person to the victims of their petty and rude remarks found in the cables... in general nothing revealed was outside the bounds of what is reasonable to discuss if one assumes the conversation will be private (humans are gossipy, petty creatures). They do reveal a somewhat unflattering aspect of diplomacy, but nothing that any realist wouldn't have already imagined.

The meat is in the Iraq and Afghan war logs, so it sort of irks me when the diplomatic cables are discussed b/c they are mostly just gossip column material.