Even if it doesn’t support anywhere near the number of services that Friendfeed does at the moment, I still think that this could hurt Friendfeed. ReadWriteWeb was pointing out that it doesn’t have the ability to export data as much as Friendfeed does, it is still important to remember that most casual users on Facebook aren’t as interested in data portability—they only have Facebook to go to, since it does what specialized social networking sites already accomplish, even if it isn’t as good. Importing events from other websites only reinforces that.
Could it spell doom for Friendfeed? Probably not; there will always be people who don’t go to Facebook or those that need something more robust than what Facebook offers. Even so, I’m interested as to where this goes.