I have not used it other than adding it to my projects. I have read several articles lately and the overall feeling is that i began its decline in the early 2000 and has declined ever since. There still some sites that use it but it has gone from a necessity to rarety, even the big G removed its reader and has nothing to do with RSS over the last few years.
So i was not aware of this and i saw it on your site so i added it to mine. Are you going to do the same as the big G and remove it from your sites as well ?