Same here. While my blog is more an infrequent dumping ground for (mostly technical) thoughts, I try to write up new info, things that I can't quite find elsewhere, in hopes others find them useful as well. Years ago, when ads didn't feel quite so smarmy, I had a simple banner on the page and would get an extra $100/mo or so. But then this fell off a cliff and the ads started feeling cheap, and I pulled it all off and now just have things up for free.

Yes, it costs me a bit out of pocket, but it's a useful shingle to hang, a place to dump thoughts, and an easy way to reference them in the future. It's not worth the time it'd take to even make the site pay for itself (~$20/mo).