Re: Promotions at work.
I think if you know that person and that person knows you even by any slightest chance, you should send atleast an email of congratulations. If you go at his/her desk and congratulate them, that will be far better. That depends upon how buisy you and that person are.
Yes, there are ppl who hold grudge though those are not that many. But you dont do it for them, do it for yourself cuz you are the person of strong character.
Just my two cents...