A simpler, webbier approach to Web Intents?

FYI, Ben Adida from Mozilla has just put up a blog post with some 
thoughts on simplifying web intents [1].

It raises some interesting points that seem worthy of consideration and 
discussion by this taskforce.  Of particular note, it makes reference to 
a back-of-the-envelope proposal by Hixie [2] and also touches on an RPH 
approach that sounds quite similar to Rich Tibbett's proposal [3]  - 
although I must admit I don't quite follow all the details in that 
latter proposal.

[1] 
http://benlog.com/articles/2012/02/09/a-simpler-webbier-approach-to-web-intents-or-activities/

[2] http://lists.w3.org/Archives/Public/public-webapps/2011JulSep/1509.html

[3] http://richtr.tumblr.com/post/12929135260/a-better-model-for-web-intents

Mark