HowTo: Set Permissions for Comments on SharePoint Blog

If you want to allow your blog visitors to comment on blog posts you will need to explicitly allow them to do so. To achieve this, you will need to setup unique permissions on your blog.
Here is the procedure:
1. Open http://your_blog_url/Lists/Comments/AllComments.aspx
2. Select Settings > List settings
3. Select Permissions and Management > Permissions for this list
4. Open Actions >Edit permissions (confirm this action when dialog pops-up)

Now you can setup unique permissions for this list. From this step forward you can add permissions for a specific user. The best approach is to give the Visitors group “Contribute” rights for this entire list.

You will also need to limit user’s ability to edit and delete only his comments.
The procedure is as follows:
1. Open http://your_blog_url/Lists/Comments/AllComments.aspx
2. Select Settings > List settings
3. General Settings> Advanced Settings
4. Choose “Only their own? for Edit access option

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