There is more to that though. Good Blogs make us feel like we know the person. We want to know what happens to them next. Some people prefer to keep it "all business-all the time", but how many of those Blogs do YOU personally read on a daily basis? That is one thing that I like about this Blog that you are reading now. It has a mix of information, as well as a mix of writers. You may learn something one day (Educate), and be amused (Entertain) by something you read on here the next. If you like what you see and come back to read what's new (Engage), then it would appear that we have accomplished the objective of what makes a Blog good.
And...for today...at least....I hope...I have achieved this task!