diff --git a/sites/+components/tbl_communities.php b/sites/+components/tbl_communities.php
index 48c1c2f..8ea6846 100644
--- a/sites/+components/tbl_communities.php
+++ b/sites/+components/tbl_communities.php
@@ -9,15 +9,15 @@
 	// Once handlers are attached in JS, this check ceases to be useful.
 	function column_sortable($id) {
 		// Join URL contents are not guaranteed to have visible text.
-		return $id != "qr" && $id != "preview" && $id != "join_url";
+		return $id != "qr_code" && $id != "preview" && $id != "join_url";
 	}
 
 	function sort_onclick($colno) {
 		global $TABLE_COLUMNS;
 		$column = $TABLE_COLUMNS[$colno];
 		$name = isset($column['name_long']) ? $column['name_long'] : $column['name'];
-		if (!column_sortable($column['id'])) return " title='Column: $name'";
-		return " title='Click to sort by $name'";
+		if (!column_sortable($column['id'])) return " title='$name'";
+		return " title='Click to sort by $name'.";
 	}
 
 	// Note: Changing the names displayed requires updating
@@ -30,9 +30,9 @@
 		['id' => "description", 'name' => "About", 'name_long' => "Description"],
 		['id' => "users", 'name' => "#", 'name_long' => "Weekly Active Users"],
 		['id' => "preview", 'name' => "Preview"],
-		['id' => "qr_code", 'name' => "QR"],
+		['id' => "qr_code", 'name' => "QR", 'name_long' => "QR Code (for use in-app)"],
 		['id' => "server_icon", 'name' => "Host", 'name_long' => "Server host"],
-		['id' => "join_url", 'name' => "URL", 'name_long' => "In-app Join URL"],
+		['id' => "join_url", 'name' => "URL", 'name_long' => "Join URL (for use in-app)"],
 	];
 ?>
 
@@ -70,15 +70,24 @@
 		data-hostname="<?=$hostname?>"
 	>
 		<td class="td_identifier" itemprop="identifier"><?=$id?></td>
-		<td class="td_language"><?=$language?></td>
-		<td class="td_name" title="'<?=$room->name?>' preview" itemprop="name">
-			<a href="<?=$room->get_preview_url()?>" target="_blank" rel="noopener noreferrer">
-				<?=$room->name?>
+		<td class="td_language" title="Language flag for '<?=$name?>'"><?=$language?></td>
+		<td class="td_name" title="Click here to preview '<?=$name?>'" itemprop="name">
+			<a href="<?=$preview_link?>" target="_blank" rel="noopener noreferrer">
+				<?=$name?>
 
 			</a>
 		</td>
-		<td class="td_description" itemprop="description"><?=$desc?></td>
-		<td class="td_users"><?=$users?></td>
+		<td
+			class="td_description"
+			title="Description for '<?=$name?>':
+
+<?=$desc?>"
+			itemprop="description"
+		><?=$desc?></td>
+		<td
+			class="td_users"
+			title="'<?=$name?>' has around <?=$users?> weekly active users."
+		><?=$users?></td>
 		<td class="td_preview" itemprop="url">
 			<a href="<?=$preview_link?>" target="_blank" rel="noopener noreferrer nofollow">
 				<span class="protocol-indicator"></span>
@@ -89,11 +98,12 @@
 				class="qr-code-icon"
 				src="qrcode-solid.svg"
 				alt="Pictogram of a QR code"
+				title="Click here to view the QR Code for '<?=$name?>'"
 			>
 		</td>
 		<td class="td_server_icon"
 			data-sort-by="<?=$pubkey?>"
-			title="<?=$hostname?> (<?=$pubkey?>)"
+			title="Host: <?=$hostname?> (<?=$pubkey?>)"
 			item="image"
 		>
 			<div class="td_server_icon-circle" style="background-color: <?=$icon_color?>">
@@ -104,8 +114,12 @@
 			<div class="join_url_container" data-url="<?=$join_link?>">
 				<a class="join_url show-from-w5" title="<?=$join_link?>"
 					><?=truncate($join_link, 32)?></a>
-				<a class="noscript" href="<?=$join_link?>" rel="external nofollow"
-					>Copy link</a>
+				<a
+					class="noscript"
+					title="Copy this link to join '<?=$name?>'."
+					href="<?=$join_link?>"
+					rel="external nofollow"
+				>Copy link</a>
 			</div>
 		</td>
 	</tr>