Rotating RSS links and using RSS feeds

I'm trying to use RSS to rotate links sent to bookmarking sites, but that does not work as expected and I just send a link to 3 different sites even though I've configured the option to use hundreds of links for a single site.

Plus, I try to use the little RSS to submit a site to your bookmarks, but there does not seem to be any macro for that or I missed something. It would be better to submit RSS links using their own title.

Thank you