As parents, we have a responsibility to our children to make sure they enjoy and get the most out of youth sports. The US Youth Soccer web site has some great articles on positive sports parenting. All the articles can be found here:

http://www.usyouthsoccer.org/parents/resourcelibrary.asp

Here are a few good ones from the site:

Why Kids Stop Playing

Youth Soccer In America: How do we measure success?

How To Talk to Your Child After a Game