> Fiddle endlessly with Photoshop CS4

If you're feeling incredibly obsessive about small gains, take a look at this beyond-comprehensive list of ways to use Photoshop CS4 at its very, absolutely fastest. [via Daring Fireball]

The simplest tip on that list is more likely to make a perceptible difference for the average user than all of the others, combined:

"Photoshop requires at least 2 GB of free hard-disk space, but more is recommended. The OS volume should contain at least 20 GB of free space to ensure that the virtual memory system has plenty of available hard disk space."