You're asking if it is important to include all links in RSS - look at other huge services - nytimes.com displays only 25 links in it's feed. It's up to RSS readers software to fetch your feed often enough to get all I guess.

Sorry for double-posting, I don't have enough reputation points to use comments.

You're asking if it is important to include all links in RSS - look at other huge services - nytimes.com displays only 25 links in it's feed. It's up to RSS readers software to fetch your feed often enough to get all I guess.