Rotating RSS links and using RSS titles

I am trying to use RSS to rotate the links sent to the Bookmarks sites, but it does not work as expected and just sent 1 link to 3 different sites, although I have configured the option to use hundreds of links for a single site.

I'm also trying to use the RSS feed to send it to the bookmarks site, but there does not seem to be any macro or I've missed something. It would be better to send the RSS links using your own title.

Thank you