After trying out several different configurations of your plugin, I decided that this WP SEO by Yoast was not for me. That's totally fine— I know you work really hard to make functional plug-ins that people use all the time.
What's not fine is that today, I found an active tracking device (yoast_tracking) in my current cron jobs. Again, I deleted your plugin in its entirety at least two months ago.
According to my records, your tracking device has been actively tracking data on my site all this time. I've taken a screenshot of the page showing that I've finally deleted your tracking device that includes the date, the time, et. al. and shows, also, other current cron jobs and their working processes.
Let me state clearly that I am not technically savvy enough to know whether the active Yoast tracking device I found was accidentally left behind after I completely removed your plugin, or whether it was intentionally left behind by your plugin.
I'm really hoping for both of our sakes that the left-behind tracking device was some technical one-off accident due to some something-or-other having to do with my site and not an intentional or accidental regular occurrence for anyone who checks the box that allows your plugin to track data anonymously for the purposes of improving your free plugin... only to find that your tracking device is still collecting data even after the plug-in is removed.
Here's my problem, Yoast— should I ever consider using one of your plugins again, I will be second-guessing the possibility of any Yoast leaving unwanted active tracking devices on my blog whether or not I continue to use it. I'm really, really unhappy about today's discovery, and I really, really hope you can figure out a way for this to never happen again, regardless of the technical circumstances.