Set aside a specific time each week to scan the headlines and pick out the most interesting. For HN or most content aggregation sites, if something is particularly important, it'll stay on the first 5-6 pages for more than a week.

Scan the first few pages, pick out 5-10 articles, read for an hour or two. You'll be at least 80% as informed as if you had checked in every day. This also lets you deep dive into any of the ideas if they're particularly interesting, because it's such a small list of mental options.

One of my worst problems is ending up with a notebook page of 40 items that I found interesting. I never go back and learn more about them because I can't really decide what's the most interesting. Cull options ruthlessly until you have a manageable set of options.

http://www.hackernewsletter.com/ does a good job.