Yes, the uncommondescent blog is heavily conservative, and science and tech focused. But, in general there is a correlation between tech and liberal or libertarian. But this is because that crowd tends to eschew the time consuming obligations that accompany a lived out traditional conservative viewpoint, which would prohibit one from heavy online participation.
There are the Breitbart and Fox News message boards, but that's mostly an older crowd with much time on their hands. The 20-30 conservative crowd is probably busy raising families and being involved with their communities.