I've been using Yahoo Pipes as an RSS aggregator, which worked fine until one of the Atom feeds starting putting <name>Linode</name> into the <author> tag.
Yahoo Pipes translates this into RSS by just putting Linode into the author field, which is invalid RSS as that field must contain an email address. It should just omit the field in this case.
Here's the simplest pipe showing the broken behaviour:
Linode Status updates (Atom Feed bug)
W3 validation problems
This invalid behaviour breaks the service I use to read RSS...
Sorry, I used tags in the subject of this post. Should read:
Bug with parsing Atom feeds with <author><name>Blah</name></author>
You could use a Rename module to rename item.author to, say, blob.