I have for some time told people that one way that my blog was different was because I was focused on offering a high signal-to-noise ratio. I told them that they could subscribe to my blog safely, as I'd not inundate them with anything but the highest quality posts. At first, this meant that I'd not post unless I had something significant to add to the topic. No simple pointers to interesting ideas, no simple rephrasing, or simple agreement -- I had to add value.