Its good to see that Joseph Smarr of Plaxo got i-name support (in OpenID 2.0) up and working. I'm pleased to see folks in the OpenID, community but outside of the i-name/xri communities, implementing i-name features. Its a well-appreciated sign of support and bodes well for the future of i-names.
I'm really curious to hear what issues, if any, Plaxo might have had doing this implementation and how it affects their overall user experience. There might be some really good lessons here for others. Joseph has already produced a recipe guide for OpenID relying parties - I hope i-name support is added to that document, to the extent that its needed.