Speaking of recommendation engines (which I have been, all over the place, at length, and so feel no need to link to) it seems to me that the one at GoodReads.com could do with a little more fine tuning.

Reactions from around the web

Webmentions

Webmentions allow conversations across the web, based on a web standard. They are a powerful building block for the decentralized social web.

“Ordinary” comments

These are not webmentions, but ordinary old-fashioned comments left by using the form below.