Have nothing to do with stupid and senseless controversies; you know that they breed quarrels. And the Lord’s servant must not be quarrelsome but kindly to everyone, an apt teacher, patient, correcting opponents with gentleness. God may perhaps grant that they will repent and come to know the truth, and that they may escape from the snare of the devil, having been held captive by him to do his will. II Timothy 2:23-26
This passage from the Daily Office reminds me that blogging uses controversies (even stupid, senseless ones) to attract looks. Staying mired in quarrels makes it easier to find material and readers.
A blog is not all that effective for conveying kindness or patient, gentle correction - indeed, it is not well suited to building the kind or relationship that allows for such depth of conversation.
A blog can be a forum for apt teaching, and sometimes a well turned phrase or fresh presentation of an idea will help a reader escape the devil's snares.