Even worse is keyword technology and version. "I need someone with X version 5.12" kinds of job ads. Really, you intend to avoid upgrading for the rest of time?
There exist job ads which have the explicit purpose of not finding a qualified candidate. It tends to be a result of things like H1-B visas, union contracts, and other frameworks which provide 'first dibs' on an opportunity to a subset of the global labour pool.
I remember visiting a recruitment consultant after University in the dot com bust of 2001. He told me to add Oracle version numbers to my CV as "Techies love that".