Some mode of online social interaction that seems ridiculous now but will seem obvious in retrospect. This will be milked for ads and acquired by a big player w

Some mode of online social interaction that seems ridiculous now but will seem obvious in retrospect. This will be milked for ads and acquired by a big player while me-toos nibble the ends in the aftermath. The market will grow from zero to millions in this time, but it will be entirely consumed by one of the big five and everyone will just think of it as a Google feature or something.