Reluctantly, the Millstone is moving to preapproval of comments. We recognize that this impedes the free flow of conversation to some degree but we have been disappointed in the attitude expressed by some commenters who are using the comment privilege to carry out private attacks and post sarcastic remarks that are not of interest or value to most readers of the Millstone. There are many residents who are making valuable contributions through the comment sections and we want to allow those voices to be heard. We have tried other measures — encouraging commenters to post with their real names, posting comment guidelines — but they appear to have had little effect. We will now try the preapproval option. Readers may let us know their views about this by e-mailing us at email@example.com.