Plagger competitive services

Planet and newspipe are examples of the Plagger competitive "software". What about services? Well, there're a couple of competitive web 2.0 sites that do things pretty close to what Plagger does.

Feed Rinse: "Feed Rinse is an easy to use tool that lets you automatically filter out syndicated content that you aren't interested in. It's like a spam filter for your RSS subscriptions"

Touchstone: "Subscribe to changes on your favourite website. Set rules for what’s important. Have alerts appear on your desktop while you work." They call subscription/notify/publish plugins as Input/Output Adapters.

Dapper: "Dapper’s mission is to allow you to use any web based content in any way you can imagine. And by use, we mean going beyond just reading or viewing a webpage."

xFruits: "XFruits makes possible the Mashup RSS creation in a very simple way thanks to the Composer. You can assemble the bricks together so as to build your own feed-based service.
"xFruiter" service's users are referenced. "