Applications or browser extensions that interact with Google services often include the authuser parameter to ensure they're pulling data from the correct account.

For Researchers:

A/B test with 1,200 participants presented pairs of search result mockups for identical queries, measuring click preference and time-to-click. Profiles were manipulated to show varying levels of detail (photo, bio, contribution history).

The authuser parameter is not for manual typing. It is automatically added by Google when you have multiple accounts logged in.

The link you likely intended to type (or saw somewhere) is:

A chronological history of every written review you have ever published. From here, you can edit old reviews, delete outdated feedback, or see how many people have marked your reviews as "Helpful."

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.

Periodically check your profile to remove outdated or duplicate contributions and ensure everything looks accurate.

This guide explores what this page does, how to use it, and why managing your profile matters. What is the Google Search Contributions Profile?

Your contributions are public by default. To hide them, you must delete them. There is no "private contributions" setting.