A pipe can take any data-driven feed combination, mash them up and spew them out in the formatting of data that the owner desires. Pipes also allow Google Base's Blogger to pump traffic to a larger audience that rely on Yahoo Base and if you'd like, MSN Base, Wikipedia and anything that offers feeds.
To generate your own site feed or an aggregate of many sites, you will need your feed URL or the other sites' feed URL's.
For posts, I just use the default "http://yourblog.blogspot.com/atom.xml".
You could also try "http://yourblog.blogspot.com/feeds/posts/default/".
For comments, replace the URL with your comment feed URL which should default to "http://yourblog.blogspot.com/feeds/comments/default/".
Creating a Pipe
- "Sign In" with your Yahoo! ID,
- Click "Create a (new) pipe",
- From "Sources", drag a "Fetch Feed" module,
- Paste a feed URL into the "Fetch Feed" module.
- Connect the Pipe Output.
Sorting a Pipe
y:published is the key element of a feed when sorting chronologically.
To sort a pipe, use the "sort" module and arrange it in "descending" order as depicted.
From there click on "Save", then "Run Pipe",
In your output, choose "Get as RSS".
The page you end up on is your piped feed. Copy the URL from the address bar or subscribe using live bookmarks with firefox. What I use pipes for are recent comments on my blog and recent posts of other blogs. Now with just a click I can check all my friends' and their friends' blog activities and recent comments and posts.
I can also take that feed URL and embed it into Blogger's feed-widget, read it with Outlook or Google Reader or embed it on iGoogle. The possibilities are endless.
I would recommend using Feedburner after creating a pipe.
Simply put, after indexing my blog feed on Yahoo! Base using Pipes, I will re-index my blog on Google Base using FeedBurner. http://feeds.feedburner.com/Aksn1p3rs
There's so much more to pipes... just clone a few and play with them if its in your interest. I also like to play around with it cos of the connectors and the numerous data manipulating modules.