A rising number of sites and applications are supporting the Atom standard of syndication. I have seen some complaints about software which only supports one and not the other. I haven't read up on their differences, but it seems like Atom is gaining steam. Drupal only supports an older version of the protocol at this point. But my favorite feed reader, liferea supports atom. Which is how I read Melissa Kadera's new blog.

Google Goes Atom

Google spurns RSS for rising blog format | CNET News.com.
I typically don't pay much attention to the syndication standards wars
but this is kind of interesting. Google has gone with the Atom standard instead of RSS for syndication on its Blogger network. Existing Blogger Pro users with RSS feeds can keep them but all other Blogger customers will only be able to deploy Atom feeds.

As long as all the popular newsfeed readers implement Atom, I don't
think it will make much difference to the end users. Anyone maintaining
a list of Atom adoption in reader software?

Update: I should have dug a little deeper on the Atom site. Here is a directory of client software (mostly readers) that supports Atom. Thanks, dw!