Yesterday we at OurChurch.Com launched a Missions Mashup. It integrates information about missionaries all over the world onto one page.

One aspect of the missions mashup is an aggregated missions feed. The idea is that any missionary with a blog can register their blog. We combine all the feeds into a single feed so that people who are interested in missions can go to that page or subscribe to that feed to read updates from all the included missionaries.

Currently I'm using Yahoo Pipes to aggregate the feeds into a single feed, and then a separate Javascript to embed the feed into the web page. Everything works fine, except there it doesn't tell you what blog (missionary) each post is from, and so far I haven't been able to figure out how to do that with Yahoo Pipes. So, my question is...

1) Does anyone know how to make the set the author if each post to the name of the blog in Yahoo Pipes?

or

2) Is there another blog aggregator tool like Yahoo Pipes that can do this?

or

3) Is anyone familiar with a PHP script that can aggregate blogs?

Thanks,
Paul