Using the Internet as a Giant Aide-Memoire

I have posted thousands of technical advice/tips to the Internet newsgroups and discussion groups. I've also posted hundreds of questions.

To facilitate re-finding my postings even years later I always leave a special signature in them "zzapper".
So when I'm googling I just add zzapper to the search. It's not quite unique there's some Dutch product called zzapper, but it's good enough.

What signature could you add to your postings?