The power of blogs, in many ways, is the RSS feed capability that allows people to scan and read many blogs or news sites quickly... something like emails.
On Spiritual Formation: "Fire Within" by Thomas Dubay
On Reaching Out To Others: "The Insider" by Jim Petersen
On Leadership: "Leadership and the New Science" by Margaret Wheatley
On Community: "Waking the Dead" by John Eldredge
On Church Planting: "Church Planting Movements" by David Garrison