+[[!meta date="2007-04-14 20:29:32 +0000"]]
+
If you have a [[blog]] that is aggregated, either on a site like Planet
Debian, or just through user subscriptions, one common problem is that
-changes to the guids of items in the blog can "flood" the aggregator,
+changes to the guids of items in the blog can “flood” the aggregator,
causing all recent blog entries to be posted to the top of it.
This can happen in a lot of situations:
-* Perhaps you've just switched to ikiwiki from some other blog engine and
+* Perhaps you’ve just switched to ikiwiki from some other blog engine and
imported your data.
-* Perhaps you've turned on the `usedirs` setting, which changes all the
+* Perhaps you’ve turned on the `usedirs` setting, which changes all the
urls in your wiki. Even if you set up
[[redirections|redirections_for_usedirs]] for the old urls, you still face
the issue of flooding aggregators.
-* Perhaps you've just moved stuff around in your wiki.
+* Perhaps you’ve just moved stuff around in your wiki.
+
+To avoid annoying readers in these situations, it’s a good idea to remove
+any existing items from your blog’s news feed. That way only new items will
+show up in the aggregator. The best way to do this is to add a `feedpages`
+parameter to the `inline` directive for your blog, with a condition such as:
-To avoid annoying readers in these situations, it's a good idea to remove
-and existing items from your blog's news feed. That way only new items will
-show up in the aggregator. The best way to do this is currently to modify
-the [[PageSpec]] for your [[blog]] and add a condition such as:
+ feedpages=created_after(blog/posts/old_post)
- and created_after(blog/posts/old_post)
+Where “old_post” is the name of the last post you made to the blog before
+making the change. This will limit the feed to only newer posts, while still
+displaying the old posts in the blog page.
-Where "old_post" is the name of the last post you made to the blog before
-making the change. This will limit the feed to only newer posts (the older
-posts will still be available in the archives).
+Alternatively, you can add the [[plugins/meta]] guid directives to pages,
+to force the old url to be used.