Meta-blog question

Question for the floor:
Is it better to trash the links to your blog that have nothing to do with your post?
Or better to accept incoming link traffic, even if it's basically a bot--because it drives up your SEO?

For example, for the post below, on Rural and Native libraries, the Sports Guru blog linked to us. Well, I'm flattered but there is nothing sporty or guru-ish about the post. Not to mention it is quite apparent that Sports Guru is a machine-created auto-blog. No editorial brainpower there. So I just deleted their link to us.

Thoughts? My gut would say delete them because the links aren't relevant. And relevancy, usefulness to the user/reader is going to trump pure link love. If it doesn't now, it will soon enough for search engine algorithms. Black box/black hatters notwithstanding.

What do other people think?