There was a fun pitch under a huge roof where I had to climb into a corner, then lower myself down the rope and run back and forth on the wall until I could catch the edge of the next crack system.

WSJ: Training for the Big Wall | By Michael J. Ybarra

"If you're an enterprise that is doing just basic text e-mail back and forth, chances are you're not going to run into any problems here, " he says.

CNN: 'Scanner' eyes Y2K problems in e-mail attachments