Webmentions are strange, at least in how the WordPress plugin handles them, as they contain far less context about the pinging post — which is to say none whatsoever. Old-fashioned trackbacks and pingbacks at least include a snippet of the post which sent the ping. Webmentions are presented simply with, “This post was mentioned by whomever.” This does not seem especially helpful when such inter-blog links are meant to serve not just conversation but context on the web.