I even got a job offer from ICQ back in the day. One of the perks they offered was a small ICQ number ending in zeros.
I didn't take the job offer because I was in high school, though, and wasn't even looking for a job. It's unclear whether they knew that. I'd written some companion program and put it on the internet and they'd found it and were impressed. :)
I still remember going into my parents room to tell them I'm applying for a job and they had no idea what I was talking about. I submitted the application, and the Xoom staff had a good chuckle as they had no idea I was ~14 at the time.
I worked on some ICQ software in high school, and was the maintainer of large user base ICQ clone. I still own the domain: licq.org
Never got a single job offer, guess they saw my code and went running away ;)