Advanced Customer Review Extension will give facilities to the store owner to Import mass customer review usgin csv file by product id.
After loged in magento admin panel from Catalog->Reviews and Ratings we will find a new option Advanced Customer Rviews.
From Advanced Customer Rviews if we click All Reviews we will get the list of customer reviews as following screenshot
After click on Import Product review button we will find the following Csv import from where we will upload the csv file for the reviews of the products as following screenshot.
After browse the Csv file and upload it we will get the the information on the list again as follows
After Click on Edit fuction we will get the following edit from to edit the information
The Formate of the Csv file will be like this