add a blog syndication disclaimer

templates/options.tpl

@@ -193,6 +193,8 @@
 		<label for="syndicateblog">Display on Planet SUCS:</label>
 		<span class="textinput">
 			<input type="checkbox" name="syndicateblog" id="syndicateblog" {if $member.syndicateblog}checked="checked"{/if} />
+			<div class="note">Tick this box if you wish to have your blog syndicated on <a href="http://sucs.org/Community/Planet">Planet SUCS</a>. We'd like to keep the Planet free of needlessly offensive/illegal/liable-to-melt-eyeballs material, and may decide to remove feeds which don't comply with this policy. Consider setting up a category and separate feed for posts you'd like to appear on Planet if you feel your blog may otherwise be unsuitable.
+			</div>
 		</span>
 	</div>
 	<div class="row">