Another alignment thread!

I disagree. Toe-in for a rear wheel driven car should be 1/16in or less, depending on how tight the front end suspension/stg components are. If everything is tight, including wheel bearings adjusted properly and good quality strut rod bushings, you can reduce toe-in closer toward zero.
the idea behind toe-in is that when the car is driven forward, with whatever play there is in all the components, the tires will pull away from each other and be pointed straight ahead. So to compensate for that, they adjust the tie rods to point the tires inward just a slight amount at rest, then they will be straight ahead at normal forward speeds.