I had a long drawn out reply to this that got eaten. You'll have to live with the short form, sorry.
Your 1300 quoted is only half the text, you should read and consider the rest in the context it was said. People are trying to claim that the cables reveal names of possible informants who's lives subsequently become in danger. Can you please point to where the Kenya cables listed these 1300 people ? or was it possibly that the data highlighted corruption in the government that subsequently lead to an uprising in which 1300 people were killed ? Hopefully I really don't need to point out the difference to you in finer detail.
Added to this, I am puzzled by the focus on Assange as a figure to hate. In all the releases up until recently (and there is a reason that changed - Thanks Guardian, not Assange) the media were handling the releases, not Assange, if there were names not redacted, then the Media outlets that posted the cables are responsible for any harmful outcome, not Assange. If you want to hold Assange responsible then you could also equally hold the original leaker responsible, as well as the people that improperly secured the data, and while you are at it, the embassy for not obsficating things a little better, or maybe the original government that perpetrated these crimes (or individuals in many cases).
Why the hate on Assange ? it almost seems irrational.