I was offered a lecturer (assistant professor) position which I decided for personal/professional reasons not to take up. I therefore remain currently a postdoc. I have seen people listing such offers on their CV, with the addendum "not taken up". I guess the rationale is to convey the message to future prospective employers that "someone already deemed me good enough for this kind of job".
I was wondering if while I am a postdoc it is a good idea to list said lecturer offer on my CV, and if so, whether I should drop it once I manage to secure a lecturer (or equivalent) position elsewhere.