And I would say that it's totally up to any OStatus client to improve on that in their UI if they want to. Mobile phones and e-mail clients rarely uses the raw numbers and e-mail addresses in their UI:s but instead uses data from eg. an address book to make it more userfriendly.
Gotta go with bang paths.
@chrismdp!{twitter,rstat.us,app.net}.
This kind of works. Ideally I'd like to drop the leading @ but I guess that'll be hard to do.