Let's say they recommend you for a job, but the admin doesn't like you, it comes back on the person who recommended you. Or the admin doesn't like that person and they recommend you, meaning that you'd be less likely to get the job.
For the same reasons that I don't ask people to recommend me, I don't feel comfortable recommending anyone else. I will tell people about job openings or let them know about different employers, but I will not give a personal recommendation.
I do believe that networking is super important. While I won't ask to be recommended or recommend other people, through networking I can find out who is hiring and where they advertise. I will also happily tell people if my employer is hiring and answer any questions they have about the job.
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