I was recommended to my job by a former co-worker. We were both miserable at a previous company. He started here and brought me on. I've actually helped friend

I was recommended to my job by a former co-worker. We were both miserable at a previous company. He started here and brought me on. I've actually helped friends lately look for jobs. As a tech person in NYC, I'm constantly meeting people in startups who are looking for great people. It's an easy intro e-mail and then my work is done! Do your friends know you're looking for work?