Users of Blosxom now have an Atom plug-in available. It's called Atomfeed. Atom should be coming to Blogger soon.
Not everyone is a complete Atom fan. Jeremy Smith sees Atom as a blog-specific tool rather than a stage in the evolution of RSS. In other words, Atom for blogs, RSS for other Websites.
"Now, can we all move along? RSS will be supported in a lot of capacities. Atom will be supported in a lot of capacities. The world will not end. Armageddon is not upon us."
Take a look and make sure you read the comments to his post.