Block comments
Using Jamroom
Right.
You'd add a form field maybe 'profile_nocomment' to the Profile (site.com/profile/settings) form using the Form Designer
Docs: "Using the Form Designer"
https://www.jamroom.net/the-jamroom-network/documentation/getting-started/1275/using-the-form-designer
Then get your users to input comma separated values of the profiles they dont want to comment.
so $profile_nocomment would print out as '1,24,27,451,256', something like that depending on what they entered.
Then the code would be
{$blocked = explode(',',$profile_nocomment)}
{if is_array($blocked) && !in_array($_user._user_id, $blocked)}
// show the comment form
{/if}