The survey you link to is for a related, but distinct, research initiative being conducted by Pau Giner. Pau's work[1] is focused primarily on the testing the usability of the Content Translation interface. The current request is for participants in an evaluation of the article recommendation service. I've been coordinating with Pau. There isn't currently a contact list of respondents to Pau's survey who are available to participate in research. That's why Samantha and I are posting a new call for volunteers.

Cheers,

Jonathan