Lifehacker.com is a great site. However, you must be careful. It contains scripts from 3 well-known ad-servers that implement tracking cookies: quantserve.com, scorecardresearch.com, and doubleclick.net.
If read-later services aren't your thing, your browser's bookmark bar can be a convenient place to stash articles and posts you plan to getting around to. You can do what Lifehacker reader leftymcrighty does, though, for better placement: reduce your permanent bookmarks (email, search sites, banking, etc.)