[kjs3]

Isn't that a client issue, not an RSS issue per se? Accept a lot and have some rules to filter it? That's kinda what I like about RSS...I have the power to decide what ends up in my feeds, not what some algorithm decides I should see.

[trowawee]

Not really; definitionally an RSS feed is just a big list of everything a site publishes. Sure, the rules-based approach will work, and I assume anyone who's been using RSS for a while has built up a set of filter rules that amount to a personal algorithm for their feed. But it's a big initial investment in time and effort to set those rules up. If you subscribe to a bunch of personal blogs, you're fine. But if you sign up for, say, the NYT, the WSJ, and Bloomberg (not a crazy list) the day you set up an account on Feedbin, you'll have 200+ items by the end of the first day. Are you 100% sure you already knew every rule you want/need to filter those items? If not, are you a fast enough reader or willing to just mark as read and ignore stuff? I think a lot of people aren't, and social media has accustomed people to not thinking about stuff like this.

[vidarh]

It is absolutely a client issue. For a while (before their API limits became an issue), I dealt with Twitter with a Bayesian network, and it took very little training to massively improve the experience.