Maybe! archive.org's oldest capture of my page [0] is from 22 Dec 03, and doesn't have anything for Stanford's until 9 Apr 04 [1]. But I don't think they got the idea from me, since the first links to my page from blogs and aggregators came in Sep 04 after I added the bookmarklet [2].

[0] https://web.archive.org/web/20031222201145/http://angel.net/...

[1] https://web.archive.org/web/20040507195550/http://crypto.sta...

[2] http://jonudell.net/udell/2004-09-07-nic-wolffs-single-signo...