Increased blog readership: Good or bad thing?

Well, I think it's a paradox to have an increased blog readership. The good thing is that for every happenning event, it can be shared among your family members and friends immediately after you update an entry on the event. But sometimes, after relating your friends to the blog you are writing on, there are certain issues that you don't want a certain individual or even a group of friends who know that individual closely to know about the things you are going to write in that particular entry which is of course has something to do with them.