Rearden Commerce is the first service provider to act as a front end to various services, and to automatically populate desktop calendars with a variety of appointments customers can schedule with those services. Think everything from airline reservations to haircuts.
After a presentation this morning at Burton Group's Catalyst conference, I asked Rearden CEO Patrick Grady if the services he's built could be used to sync calendars between endpoints (two customers) without an intermediary.
Grady's answer was, not really, unless one of the two customers was a Rearden customer (in other words, a service provider) whose calendar was stored on a server such as Exchange or Notes.
Oh well. It's another interesting puzzle piece. At least I got to put the issue of calendar interoperability in front of a room full of very smart IT managers. I give Rearden Commerce a Swampfactor of +1. (+5-good, -5-not good)