I received a similar notice for a few userscripts I wrote and published in 2006-07. I framed the letter from their lawyer and hung it on my dorm wall. I tried

I received a similar notice for a few userscripts I wrote and published in 2006-07. I framed the letter from their lawyer and hung it on my dorm wall. I tried to support and update my scripts as long as I could, but they would continuously change class names, layout, and data structures to thwart userscripts.