I love mainframes. I really do. A friend of mine uses two of them as emergency heaters (and he doesn't even live in Washington state :-) ).

You know, there are farmers, and there are ranchers. And there is Bob, with his barn - ah factory. And Bob, Bob Howie is a really great VP of International Sales, learned his Sun Tsu, and works with a terrifying sales force. Have a look (from 360comedy on YouTube):

• The art of sale, lesson 1: Are you the decision maker of your housefold? Do YOU want to upgrade your 386 (to a 360)?
• The art of sale, lesson 2: Do YOU have 5 minutes and 5 million?
• The art of sale, lesson 3: Do YOU know your facts? Now, let's check you skills.

The single most important attribute of the main frame is:

• Economics
• Security
• Energy efficiency

Pick one, or all of them.