  Privacy dashboards and transparency tools help users review and manage the
data collected about them online. Since 2016, Google has offered such a tool,
My Activity, which allows users to review and delete their activity data from
Google services. We conducted an online survey with $n = 153$ participants to
understand if Google's My Activity, as an example of a privacy transparency
tool, increases or decreases end-users' concerns and benefits regarding data
collection. While most participants were aware of Google's data collection, the
volume and detail was surprising, but after exposure to My Activity,
participants were significantly more likely to be both less concerned about
data collection and to view data collection more beneficially. Only $25\,\%$
indicated that they would change any settings in the My Activity service or
change any behaviors. This suggests that privacy transparency tools are quite
beneficial for online services as they garner trust with their users and
improve their perceptions without necessarily changing users' behaviors. At the
same time, though, it remains unclear if such transparency tools actually
improve end user privacy by sufficiently assisting or motivating users to
change or review data collection settings.
