Syndicache, an RSS service and class library

This is the first of two or three pieces of code I've been working on to read RSS.  Everyone's written a blogging tool, it seems, but I wanted something I couldn't find anywhere else when I started this project (and I'm not sure there exists something good today):  An RSS reader that worked in my web browser.

The reason I wanted this is that I read my RSS from more than one place:  The laptop somewhere in the house, at my main PC, at work, etc., and having a typical Win32 client application as my reader just wasn't cutting it.

Radio has an RSS aggregator page, but I found it didn't really give me any tools for managing a large amount of subscriptions, and it hasn't really been updated since I started using Radio (well, no updates that affect this).  So I started Syndicache.

What I've posted so far is two pieces:

• RssObjects - some classes that understand RSS and can take a RSS link and retrieve the feed, parse it, and update an SQL Server (or MSDE, more likely) database with any new items found since the last scan.
• RssService - A Win32 service that drives the RssObjects library, so that my feeds are regularly updated.

I've had this running for months now, and I have a database with over 4000 items in it, from the 40 or so feeds I have subscribed to.  It determines whether an item is "new" or not by hashing some of the item's fields including the description and item link, so generally I don't get duplicates - it will be nice once an RSS method of retrieving only new items is standard.

You can download the code here:  Syndicache.zip.  It's all C# code, and I didn't include binaries so if you don't have a compiler (and know how to use it) you should wait until this is a little farther along. Currently I think it's a pretty good example of how to retrieve RSS and parse it, and it might be a good starting point for anyone else writing an aggregator.