Anyone have experience creating a RSS aggregator web part in Sharepoint 07?

I'm looking into building some social networking aspect into Sharepoint.  One key part is an RSS aggregator.  Does anyone have any experience writing a part like this?  Or can anyone recommend some existing code examples which might help?
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There are a bunch that already exist (including one that comes with MOSS).  
This one is my favourite (and Codeplex is littered with them -
But if you like to reinvent the wheel... :)
This list includes a search of codeplex for RSS and Sharepoint and the first hit there (plus there are others) is for a fella who posted his source code -

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FrankenPCAuthor Commented:
Thanks.  That feed reader may do the trick.

I'll test it in my environment and get back to ya.
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