I found by default WordPress requires authors to approve first time commentors. This is a good idea but kind of pain if you’re not into micromanagement. Here are where the settings are located if you want to make any changes. (Warning Spam could be an issue with unmoderated blogs)
On the bottom left should be an option labeled Settings
Once clicked a drop down menu will appear click on the Discussion option.
Now we are ready to set our comment options. I’ve circled the items that are of the most concern but feel free to set things up as you see fit.