I should have posted this earlier since, in the interweb time continuum, I'm now behind. But Yahoo lauched their pipes today and immediately following the launch it broke. Go figure
I would comment more on it but I really can't be bothered to launch it, let alone figure out what the fuck it's supposed to do. From waht the Valleywag folks are saying, what we have here is a feed aggregator that basically lets you combine all your feeds into one giant mash-up (solutions in search of problems seem to be an ongoing theme here @ thoughtsausage).
Now, maybe I'm a little bit cynical, but don't ya think Yahoo oughta focus on getting people to use RSS Feeds in the first place before they start making ultra nerdy mashup tools? For what it's worth, anytime you name your service after a legacy Unix function, you are very much in danger of being too nerdy for the mainstream.