Here's the data policy we just made:
https://github.com/UseMacro/macro-chrome-extension/blob/mast...
And just to address the other comments here, I see the reason to collect this data. It can be hard to understand usage patterns and even if anyone is using it without it. That said, I think sometimes GA isn't the best option for these type of tools b/c of the 3rd party nature of it, but any calling home will look risky as well so maybe GA is the best option we have now. I think the reason you want to be very open about it (and even better, allow it to be an option you can toggle) is that it doesn't feel like these type of tools would do this (compared to a web page), and thus the surprise factor hits hard.
I don't think very many users would go out of their way to be vehemently pro-telemetry either. It's indistinguishable from spying. Most people just shrug off their own inability to counter it and carry on with their lives, that's why marketers and other scum are able to get away with it. But it's certainly not in the users' best interest - I sincerely hope you have that interest at heart.