Here's another blog that has a nice post on prayer this week - "Why We Pray." This is a topic that is discussed ALL over the internet on some great sites! (Thanks, Beth, for passing it my way!)
Here are a few other places to browse:
A Sacred Space - this site has some beautiful daily devotions and guided prayers.
Belief.net - great resource!
The Upper Room - did you know they had a "prayer center"?
MethodX - another prayer ministry by the Upper Room.
Do you know of some good sites? Pass them my way!