This is a GREAT article from Pastor Tom Buck in response to Andy Stanley's recent outrageous sermon and subsequent "apology tweet." There are other issues in that sermon that really need to be addressed (like the total lack of any Gospel message), but Stanley's insulting comments about small churches are addressed very carefully in this article: An Open Letter to Andy Stanley
Here's a different perspective with some really good insights from blogger Seth Dunn over at Pulpit and Pen: An Open Letter to the Members of North Point Ministries Churches
Here's another good "open letter" type article from Jonathan Aigner called: Don't Take Your Kids to a Megachurch
Also, here's the recent episode of Fighting for the Faith where Andy Stanley's sermon was discussed by Pastor Chris Rosebrough.
Here's an update to this story (as of March 8th, 2016): Andy Stanley Explains His 'Stinking Selfish' Parents Comment-Christianity Today