I just answered a similar post... The way I see it, an RSS feed serves two purposes. The first purpose is for your visitors to subscribe to your content via an RSS reader. This means whenever new content appears on your site, the content will appear within their RSS reader automatically. The benefit of this is that you have the opportunity to attract visitors back to your site over and over again. The second purpose is to allow people to republish your content. There is a lot of debate whether this is a good or bad thing. If you promote yourself through the posts then having that content republished means that you get more eyes seeing your content than just on your site - which is a good thing. However it does permit people to steal your content and gain benefit from it for themselves and you get no benefit. So basically the benefits of an RSS feed should be to help attract return visitors, and possibly get your content more out there.
Also, with RSS, you can republish news feeds from other sites on your own website. This is good if you want to provide your visitors with news updates. And for SEO, the search engines like sites that update their content, so using RSS is a way to have constantly updating content.
Hi Peace4all, You can take a look at RSS2HTML which is a free script to republish RSS feeds on your site.