Originally Posted by raymor

If you read a couple of books you can manage it ok for a year or so until the hackers take it over.
Seriously for just a few dollars per month you can leverage the knowledge and experience of expert engineers who manage many similarly configured servers. Companies like Amerinoc offer the services of $100 / hour engineers for next to nothing because their engineers manage hundreds of servers.
Also the big name sites don't hire us because they are stupid. They hire us because they know that a little time from a qualified engineer will save them thousands compared to the mistakes they would make by trying to do it themselves. They know they are marketers, not engineers.