No you don't have to!
The benefit of using RSS feed for your slideshows is that whenever you're updating your original album, the feed slideshow gets updated automatically. That's all the fun! Your slideshows at "takeslides.com" are fresh content links to your albums, catalog, portfolio, latest family events, trip to the moon, etc".
Yet, you are always able to change the "category" or edit the "title", the "description" or the "tags" of your slideshow. You are also able at any time to unpublish your slideshow or delete it. (After joining you will see the "feed manager").