I always just assumed it would be better to get a link on Techmeme over Hacker News but for this blog at least, it's not the case.
Looking at one post that got one of the "related links" on Techmeme and a post on Hacker News, Hacker News provided over 100X more traffic than the link on Techmeme. Remember your Calculus 101 - the total traffic is the area under the curve of these graphs, not the max(y).
Even if you zoom it out and look at two separate posts spanned out over a period of months, the first one which was a "first class" link from Techmeme, versus an entry in Hacker News, you see the same pattern. It's almost fractal.