A bit late but I took the April 7,2012 version [0] of the page and the recent version [1] from the internet archive and made a diff [2] using `wdiff` after converting the html to text and cleaning up the pages a bit. The diff doesn't look so great and mangles the before and after text together, but it was worth a try.

The main differences seem to be updated information such as about his laptop, and changes to the prose for clarification.

[0] https://web.archive.org/web/20120407053822/http://stallman.o...

[1] https://web.archive.org/web/20150517163401/https://stallman....

[2] http://pastebin.com/zqed9rPR