Daring Fireball: How Should Mac Apps Be Distributed?
John Gruber highlights a problem I’ve been wanting to blog about for a while - the complications that .dmg files cause to usability. I’d add one more problem with them - look at any new Mac user’s desktop, and it will be littered with drive images. A friend told me that they thought they had to stay there in order for the app to work.
Read: 'Daring Fireball: How Should Mac Apps Be Distributed?'