Thanks S for the info.
Nick I think the API is going to be very useful and hopefully we can integrate it to improve the engagement and reading experience. Hopefully there this will prove more useful than suggesting articles to edit. It is already pretty good, If we can tune it even further to get better "reading" suggestions, it's going to be even more awesome.
I didn't know about the multiple titles, that's going to be useful for the Gather experiment we'll be doing for suggesting similar articles to add to a collection. Thanks.