How are new Blog Broadcast items detected?
Currently all RSS feeds are checked for updates every 30 minutes. There are three important components that AWeber uses to determine if a blog post will be pulled into a new blog broadcast--the URL, title, and publish date. Each new item published to an RSS feed has a unique URL and title (you can find this URL and title in your RSS feed under the <link> and <title> tags, respectively). The item will also have a publish date (the date when it was published to the RSS feed), which you can find in the <pubDate> tags.
When you set up a blog broadcast, we use each post's unique URL and title to define a new story. If the URL or title are missing, then the entry will not be pulled into a blog broadcast. If you notice that an entry wasn't pulled within a few hours of being posted, consult your blog host to make sure this information is present in the RSS feed. If it is, and the entry still has not been pulled, you're welcome to contact our Customer Solutions team for further assistance.
If the URL and title are present, then we will pull the post and compare it to previously sent blog broadcasts in our database for duplicates. First, we compare the title and publish date. If those match a previously sent blog broadcast, the post will not be pulled. If the title and publish date are unique, then the post will go through a second check for duplicate URLs. If the URL matches that of a blog broadcast sent in the past, then the post will not be pulled into a new blog broadcast.
If a previously published post is posted again, and it has a new URL, title, and publish date, then it may cause the story to be sent out again. Be careful in editing previously published stories if you do not intend for them to be re-broadcast.