Ars Technica - a US techie website that differs from the others by hosting good writing and understanding non-tech cultural issues. It doesn't come from the usual slightly autistic techie libertarian POV, and it's a good addition to your RSS feed if you're interested in that kind of thing.
In one of it's lighter pieces, there's a report on an experiment to find out just how much spam you can get if you try.
While I'm on the subject of site recommendations, Tom over at Labour and Capital is reaching out more and more towards something interesting. Here he is on 'Investor Suffrage' endorsing what looks like a good idea.