Posting from RSS Bandit and XHTML in RSS
Dare Obasanjo: I'll definitely add support to Joe's CommentAPI to RSS Bandit but I doubt I'll be doing the same for Sam's alternative SOAP version since I can't see any motivation for supporting both besides buzzword compliance.
At the cost of optionally supporting an SOAP envelope and responding in kind, I get better and easier integration with tools and languages like Radio and C#. If two elements and future extensibility is too heavyweight for you, then no problem. That's what optional means.
As to your uncertainty about which version of XHTML is meant by <xhtml:body>, wouldn't the same concern (and more) apply to <content:encoded>?