Sounds like we've got two action items: (1) @nparlante can chat with you about how you'd prefer this be implemented, and (2) let's agree on sensible text.  Stanford people aren't the only ones using this feature - Harvard uses this a lot too, and I'm guessing others would too if they knew about it - because the platform doesn't provide good support for surveys, it makes sense to use an external survey tool (and many universities have licensing agreements w/ Qualtrics), and it's a shame to lose data because you're not sending this info if you don't know how.  How about text like "Use %%USER_ID%% to insert an anonymized userID"?  (I'm not committed to that text, if you've got other ideas, I'm happy to hear.) Someday when the How-to-Use-Studio pdf doc is kept up-to-date, this information can be moved in there, but for now on the HTML component itself seems like a reasonable way to let authors know about this feature?