Sometimes as you get all wrapped up in the world of web 2.0 and online software as a service capabilities, it is good to remember you are only as good as your colocation facility. Users of Craigslist were recently greeted with this message
Craigslist and many other sites are having issues at the colo facility.
Please sit tight, and try again later.
We are aware of the situation, and the happy craigslist elves are scurrying to make it better, even now.
***** Remember: back up your data and distribute your computing resources if you want to avoid the error message that Craigslist had to deliver