....so from what I understand, you want a portal that will search for rss feeds, find the updated links, and then update a page? I think some form of trackback system would be ideal for this.
A very simple form of this script would take a list of RSS feeds, parse them for the latest updated information, and post that on a webpage. Really not that difficult. However, if I was doing something like this, I would create a script that parsed rss feeds at an interval, stores all the information in a database (so that I could have archiving and searching abilities) and performed trackback pings. I would also create my own RSS feeds of my "regular reads" lists, so that others might find out what I'm interested in.
I don't know of any script that does this out of the box, but since its just a matter of parsing xml files, it shouldn't be very difficult for a competent programmer to write you a quick script that does the above. There are already a few RSS parsers available (like the PEAR::XML_RSS package) which would reduce script development time considerably.
If I still had my old blog running (which was based on MT) I would have probably written this and handed it to you --- but unfortunately I don't even have time to bring my own site back up --- lest do other things (other than post on WHT that is).
Let me know if you need more help/suggestions.
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