As with most of these hijackings (like the NYT and Twitter ones last year), the attackers didn't have the server capacity to handle the load of Craigslist, and so they went down.<p>Should have used CloudFlare. :-)
I'm curious to know what the attack vector was to hijack Craigslist; and of course if the affiliate link will credit the attackers with funding if they discover their visitors were fraudulent.