When I graduated from SUNY Brockport way back when, I must have been injected with a tracking device during one of those college nights. You know, like a micro-chip.
In more than three years (and four or five different addresses), I haven't officially changed my address with the alumni office, yet, they seem to track me down. Both via phone and postal mail. Guess when money is involved (solicitation of donations), people will do anything.