Technorati
I've been trying to get linked up with Technorati off and on for a few weeks now. It finally worked today. I had previously given it "http://alexharden.org/blog/" and "http://alexharden.org/" in attempts that fizzled out. No syntax or examples are given in the instructions (at least not the ones that I read). Apparently the URL they want should terminate in a document name: "http://alexharden.org/blog/index.html" worked.