We've found that Slashdot people are "our people" when it comes to our products and projects. A mention in the comments on reddit or digg or HN brings a handful of clicks to our site and no difference in sales...a mention in a Slashdot comment brings a deluge of traffic, and a big sales spike for the next couple of days. I guess it makes sense: We're heavily involved in Open Source software (which is far more important to Slashdotters than redditors or diggers or HN'ers), we're building systems management tools (again, Slashdotters are more likely IT guys than any of the other sites), and our projects are less shiny but still have a lot of Linux/UNIX credibility that newer Web 2.0 sites generally lack. Priorities seem to fit what we're doing better at Slashdot. I'm having trouble imagining what a front page Slashdotting would be like for us (though I'm always trying to imagine what story we need to tell to get one...and figuring out what I'd need to do to our sluggish Joomla site to make it weather the load).

And, of course, I read Slashdot regularly, and enjoy it quite a lot. I think it's the only news site my co-founder reads.