Show link in account and profile pages

I agree.

This functionality should be fairly easy to implement and will result in saving a lot of time / effort.

There are 3 places where I would recommend the link:

Node
Be able to print the link in the node.tpl.php file which will display to admin who can click to "Block, Ban, Unpublish" the author of the current node.

Comment
Show the link in the comment in order to "Block, Ban, Unpublish" the author of the comment.

User Profile Pages
Show the link on the user profile page in order to "Block, Ban, Unpublish" as indicated in previous post.

I think it will be nice to have these actions on admin/content/comment page, something like this "unpublish comment, ban author, unpublish his other entries"
because of situation when spammers send tons of comments to vary nodes

ok, i make some for user profile:

// add tab to user profile
function ban_unpublish_menu() {
    $items = array();
    $items['user/%user/ban_unpublish'] = array(
    'title' => t('Ban'),
    'access callback' => 'administer users',
    'page callback' => 'ban_unpublish_menu_exec',
    'type' => MENU_LOCAL_TASK,
    );
    return $items;
}

function ban_unpublish_menu_exec() {
	return drupal_get_form('ban_unpublish_menu_exec_form');
}

// ban and unpublish button with some info, i want to do like this "0 published / 5 unpublished nodes"
function ban_unpublish_menu_exec_form(&$form_state) {
  if (user_access('administer users')) {
  	$uid = arg(1);
	$user=user_load($uid);

	$nodes=db_fetch_object(db_query('SELECT COUNT(*) AS n FROM {node} WHERE uid = %d GROUP BY uid', $uid));
	$comments=db_fetch_object(db_query('SELECT COUNT(*) AS n FROM {comments} WHERE uid = %d', $uid));

	$form['info']= array(
		'#type' => 'item',
  		'#value' =>  $user->name.' ('.$user->mail.''.(($user->status==0)?', <strong>banned</strong>':'').') has '.l(($nodes?$nodes->n:0).' nodes','admin/content/node').' and '.l(($comments?$comments->n:0).' comments','admin/content/comment')
		);
  
    $form['ban'] = array(
      '#type' => 'submit',
      '#value' => t('Ban and unpublish'),
      '#submit' => array('ban_unpublish_user_profile_submit'),
    );
	$form['uid'] = array('#type' => 'hidden', '#value' => $uid);
  }
  return $form;
}

function ban_unpublish_user_profile_submit($form, &$form_state) {
  ban_unpublish_user_execute(array($form_state['values']['uid']));
  return;
}

maybe this code is ugly, but if it rule i rework it

p.s. maybe when banning there should be some validation? like this : "if (user_access('administer users')) {"

Corrected spelling error.

I've been putting Ban Unpublish links into user account and node tabs for ages now. I like it this way. But some webmasters I know don't like it, so I think it could be made a configurable option or a separate module (as I do it). I just published my 7.x module as a sandbox project. I can probably find my old 6.x version and push it up as well if there's anyone interested.

Dear Alex,

It will be great if you can share your Drupal 6.x version.

I pay you a bounty if you can package it for us in a nice custom module for Drupal 6.x