using RSS feeds in online promotions

[WrigleyF]

Would you say an RSS feed is a necessity when it comes to advertising your online business promotions? Any tips on how an RSS feed can be used most effectively for this purpose?

[suwunk]

The more subscribers you have to your RSS feeds for your web pages, the better your Web promotion. Many people subscribing to your RSS feeds can be as important, as other sites linking to yours or the traffic to your website. More links to your blog or website, including RSS subscriptions, will improve your Web promotion.

[greenmatter]

RSS feeds also help your site get indexed quicker