this is why I run NetNewsWire and am moving increasing to RSS feeds for getting and putting out my information.
Wayne, you should consider publishing xml feeds from your site(s). You could have "just added" products, "hottest sellers", and also tie in latest posts at the bbs.
For a great example of RSS feeds, check out:
http://phobos.apple.com/WebObjects/MZSearch.woa/wa/MRSS/rssGenerator
And here is a custom generated feed displayed on a remote site (ie mine):
http://nostatic.com
Also, that homepage has RSS feeds from two weblogs, and they are automatically updated when new information is generated. Amazon is moving to RSS feeds for their catalog info.
It's the wave of the future...and next generation versions like Atom will enable more interesting applications. It could largely replace email as a communication/collaboration tool. At this point, you can't spam RSS since you choose what you want to aggregate...