Uber-blogger Tim Challies has some helpful tips on blogging here.
Timmy Brister also shared some good thoughts on what makes for quality blogging (here and here).
Trevin Wax has some good practical advice here.
Owen Strachan helps us think about how to glorify God in blogging and how humility relates to this matter.
Ben Wright gives a helpful warning about personal information on the web here.
Dr. Albert Mohler calls for more Christian bloggers to engage the culture.
Abraham Piper shares some good thoughts on reading and commenting on blogs here.