You can get many benefits of using RSS. Here are few of them:
… using RSS you will communicate effectively with your targeted audiences
… RSS improves your site’s visibility
… RSS-translation – it’s a great possibility to make your auditorium wider
… this format is well-known and acceptable by mostly Internet resources
… you can know the newest information of your interest
… sites and its visitors, which receive information from you will get all the updating directly after it was made in real time
… providing a RSS feed you remind to your customers about your site, your new offers, inform them about campaigns etc. – so, you are always keep in touch with your targeted customers
… with RSS you don’t need to use spam to deliver your information. Internet uses choose it according their interests and get the newest information from you in real time
… with RSS much more content of your web-page will be indexed by searching boots – so, you will get higher search engine ranking

All of that is great things for increasing your sales, isn’t it?