Echo Boomer

I had no idea what an Echo Boomer was, when I saw they were being singled out for advertising. What is WITH all these demographics specifically set up to make you spend your money, anyway?
I suppose I slip in at the tail end of the Baby Boomer marketing generation, which supposedly ended in 1964. So, of us four kids, Val and I are boomers, and our sisters, born in 1969 and 1970, are some wild new generation we cannot understand (Generation X, I suppose).
But Echo Boomers are apparently, kids of boomers (our echoes!).
All hail the Echo Boom. A marketing demographic of people for whom the Internet and computers has always been part of their lives.