A little known feature of Zotero is that the online version can generate an RSS feed from a collection. The feed is served via https, which is fine for e.g. feedly. However, WordPress.com doesn’t like https RSS feeds, so I forwarded my feed using feedcat – a pretty terrible service, but it was the first feed burner I could find that worked with https.
The result: on the right hand column, you can now see what the papers I recently read – it updates automagically via Zotero and the internets. Pretty cool, huh?