I find if something is important enough, it will get to me one way or another. Or I'll see it passing by on HN.
del.icio.us/popular and HN are my absolutely required readings every day.
Try AideRSS for other blogs if you you want a better signal/noise ratio:
Besides this, websites I visit sometimes:
* iTulip (http://www.itulip.com) - alternative economic news
* Boing Boing (http://www.boingboing.net) - my favorite blog.
* Your Rights Online Slashdot (http://yro.slashdot.org) - about the coming orwellian state
* Pitchfork Media Best New Music (http://www.pitchforkmedia.com/page/best_new_music)
If the site's quality is consistently good, it stays in my feed reader. Otherwise it's booted fast. As a bonus, that high-quality site will probably link to other things I've never heard of, which might be worth reading long-term.
There's no universal recipe, and very few good aggregators online. But you can usually depend on the principle that good stories will link to other good stories.
Smaller blogs are generally one-man shows, but that's what makes them special to me, they aren't out to make money, and their opinions (about generally geeky tech things, in my case) are priceless. I don't care if they are the wrong opinions, or daft opinions, just that they are alternative opinions. It helps me see different angles of new technologies, languages and startups.
I love sites like Hacker News, they filter out the good stuff, but at the end of the day its a group opinion, and sometimes even upvoted due to the title or subject, rather than the content of the linked to article.
This way I tend to find all of the interesting stuff as soon as it happens.
dave at socialbrowse
I do like The Register:
http://www.theregister.co.uk/headlines.atom
The have a slightly European bent (which is refreshing at times) and take sarcasm to new heights.
Cheers
That's enough interesting news for me.
though, I only actively seek things when I have time to kill which isn't often at all. Usually its just YC News.