I don't think people outside the US understand how large Craigslist is. I spend 1 hour, each work day, looking at the national OMPL gig feed after its been filtered for charity/stupidity/things I don't do, to see if I can pick up supplemental clients between larger accounts.
The amount of spam and high expectations / low financial reward is high, but a lot of my small business contracts are from Craigslist.
Twitter is stating that posting the e-mail address was "personal and private information." NBC suggests that the guy's e-mail address was not published on NBC's site.
Honestly, I can see NBC's point. The outing of the guy's email looked to be a means to have the Internet Lynch Mob attack the guy with that thing they do (hate mail, spam, incoherent ranting about death and cats) in reprisal for some slight.
I've never understood why people think "Freedom of Speech" applies to private enterprise. Freedom of Speech provides, as far as the internet is concerned, that the US Government (if it has jurisdiction over your hosting provider or domain name) will not censor your material unless it violates a federal law (including the National Security Act or Atomic Energy Act.)
If you post instructions for an exploit of software X on their own forums, they'll probably remove it. If you post it on a website that doesn't care, you will most likely be "safe" in that the material will not be removed. It would take a federal case to remove that information, if it was illegal.
But some people, it seems, believe that "Freedom of Speech" applies to everyone, as in "If I like X, you shouldn't be able to remove X." Unfortunately, many times, that person dislikes Y and seeks to actively remove Y from any site he's active on through various means -- downvoting, flagging as spam, offensive replies, disinformation, etc. al.
The amount of spam and high expectations / low financial reward is high, but a lot of my small business contracts are from Craigslist.