Good advice from Marco Arment:

RSS is a great tool that’s very easy to misuse. And if you’re subscribing to any feeds that post more than about 10 items per day, you’re probably misusing it. I don’t mean that you’re using it in a way it wasn’t intended — rather, you’re using it in a way that’s not good for you.

…

RSS is best for following a large number of infrequently updated sites: sites that you’d never remember to check every day because they only post occasionally, and that your social-network friends won’t reliably find or link to.

The irrational compulsion to hang on to things “just in case” manifests in oversubscribed feed readers and bloated Instapaper queues. It’s ridiculous, but the entirely voluntary glut of posts to be read can be overwhelming.

Do yourself a favour and take a minute to unsubscribe from noisy feeds, ones you keep marking as unread because “you’ll get to them later” or ones you just don’t enjoy reading anymore. If that includes mine, go ahead; I won’t mind. Chances are you’ll feel better about your feeds.