Any Yahoo Pipes true substitute out there ?

« The future loss of Yahoo Pipes in August this year [1] will be a major blow to the monitoring/research community and also web site authors looking for selected content. Its ability to combine and filter multiple RSS feeds into one feed remains unique among free hosted services. This post will focus on how we could replace Yahoo Pipes for these functions [2] (…)

This article was written with the the help of Serge Courrier, a French consultant specialising in RSS readers and the use of RSS feeds for monitoring web sites [3] »